Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

Look at it this way - the Cabal is run, at least partly, by Eldar farseers.

You know, the leaders of Eldar society.

The ones who helped the Eldar successfully prevent the destruction of their civilization, preventing the birth of the fourth chaos god and the fragmentation of their society into warring factions, doomed to wander the galaxy trapped in an endless cycle of...

Oh.

Wait.

Yeah.

I wouldn't give a wooden nickel for Eldar "predictions." Probably they aren't categorically worthless, but neither are they categorically correct. The cabal might very well be exactly what it says it is and, nonetheless, be completely wrong.

ElectricPaladin wrote:Look at it this way - the Cabal is run, at least partly, by Eldar farseers.

Where exactly did it say that the Cabal was partially run by Eldar?? I don't remember ANY Eldar being in Legion, and if you read Deliverance Lost, they definitely are not there either.

I have a question regarding Alpha Legion.

Why don't they destroy Ultramarines or any other first founding Chapter like they destroyed Crimson Consuls?

And please don't tell me it's because of the plot armor

Brother Coa wrote:I have a question regarding Alpha Legion.

Why don't they destroy Ultramarines or any other first founding Chapter like they destroyed Crimson Consuls?

And please don't tell me it's because of the plot armor

I won't say the dreaded P & A words so I will say this, GW has a blue fetish, if its blue there is superiority, if not you are screwed.

Ensis Ferrae wrote:

ElectricPaladin wrote:Look at it this way - the Cabal is run, at least partly, by Eldar farseers.

Where exactly did it say that the Cabal was partially run by Eldar?? I don't remember ANY Eldar being in Legion, and if you read Deliverance Lost, they definitely are not there either.

Remember that guy that put Grammaticus in a choke hold? Eldar.

The Alphas don't destroy the Ultramarines because it's likely not in their best interest somehow.

Durza wrote:
Remember that guy that put Grammaticus in a choke hold? Eldar.

The Alphas don't destroy the Ultramarines because it's likely not in their best interest somehow.

its been awhile since i read Legion, so thats cool.

I would suggest that the Alphas do not destroy the Ultras (or anyone else they have infiltrated), because they can gain far more valuable intel on the Imperium as a whole by leaving them alone, for now.. it's not hard to believe that with what they are allegedly in possession of (if you read Deliverance Lost, and believe them to still possess it), then they could potentially just "replace" the ultras altogether.

Imagine if Calgar was actually an Alpha...

Durza wrote:Imagine if Calgar was actually an Alpha...

I'm afraid like Daemon near Draigo for only imagining that.


Anyway... wouldn't Varro Tigurius be able to detect them even in disguise?

Not necessarily. They showed in Legion that they had ways of stopping psykers, and I'd imagine that their method in that book isn't their most subtle.

There's not any evidence that Eldar Farseers are in the Cabal.

There was an Eldar in Legion but I think he was a warrior of some kind.

He didn't seem to be of a Craftworld though so wouldn't be a Farseer.

I think he's come from elsewhere, doubtful its from Dark Eldar though

There was an Autarch (or whatever the Eldar General HQ type is) in the Cabal. It's probably logical to assume that there would be at least one Farseer hanging with them, since mapping out the future is a big part of how the Cabal makes its plans.

I liked legion, apart from the end, and I'm about 30 pages off finishing deliverance lost, but have to say I don't really like the cabal story arc.

The alpha legion believing the vision presented to them by a coalition of aliens doesn't sit right with me, seemed to easily swayed. Here is a legion that specialises confusion, deception and the wider game and they just except it.

IIRC they knew the vision was the truth as soon as they saw it, but still where's the paranoia about the source and the general distrust of pyskers and xeno.

Personally I think the vision was a lie.Iif the alpha had only pretended to be traitors and at the dropsite massacre had turned their guns on the traitors instead the Heresey could have ended on Istvaan. Half of the legion would be devistated but considering material presented Deliverance lost



I don't see that as a problem.

The cabal lied because they knew with Horus dealt with the emperor would be able to return to his studies, complete the human web way and take it's rightful place as ruler of the galaxy after wiping out all the stinking xeno's.

Just my two pence

If the Alphas had attacked the traitors on Isstvan, then they would have been mowed down. Knowing them though, virus bombing a planet with three loyalist legions in order to kill five would have been acceptable losses.

Bear in mind that the primarchs had been shown a vision where everything they cared about was turned to evil by the gods. It seems likely that they'd try destroy it instead. They don't seem to be following the Cabal any more either, which could be the entire reason the Heresy failed. Somehow.

If the Alphas had attacked the traitors on Isstvan, then they would have been mowed down.

Not sure about this, first it's the alpha legion so probably would be a little more subtle than just openning fire on the night lords and iron warrior.

Also they'd have suprise on their side and the returning Salamaders, Raven Guard and Iron hands.

They don't seem to be following the Cabal any more either, which could be the entire reason the Heresy failed

Thats the most believable part of the arc, why if you had turned your back on everything you've known would you side with aliens. It's a huge character flaw though.

I'm not a fluff expert, and won't claim to be, but i've alway found a lot of the traitor fluff a little weak. I get Horus and the word bearers, even kind of get the world eaters. I don't know enough about the Iron warriors to get them but never really liked the nightlord/alpha legion reasons for turning.

Kind of off topic, but do the traitor legions not already on Istavaan (Nightlords, Iron Warriors, alpha legion) carry out purges like the Son of Horus and the rest? the numbers question has always bugged me, I know wars are not just about numbers but all the traitors must have taken a fair whack purging the loyalists from their ranks.

I can't imagine the Alpha Legion needing to purge anyone when they were faithful enough to Alpharius to pretend to be him for some reason (was it for lolz, to confuse the enemy, or to stop assassination/capture attempts?).

The Night Lords could have taken minor losses, but they were mostly criminals and already pretty far gone.

The Iron Warriors were pretty annoyed about being told to do what they were good at, so at best that's a couple of idealists here and there.

Still, once they got to Terra it's between 2:1 and 3:1 in the traitor's favour.

I think that the Night Lords are what happens when you put a brutal idealist in charge of criminals. They stay good while he's there, but eventually it's them that turn him, not the other way around. Kurze's ideals took a strong hit when he saw that his home planet had turned bad again in his absence, and he couldn't see good in either side by the time the Heresy ended. At least, that's my take on it. YMMV.

Brother Coa wrote:

Anyway... wouldn't Varro Tigurius be able to detect them even in disguise?

If the writing in Deliverance Lost is anything to go by, Tigurius would only be able to "detect" an Alpha Legionnaire IF he had the genetic stock of Apharius/Omegon.




Automatically Appended Next Post:

Durza wrote:

The Night Lords could have taken minor losses, but they were mostly criminals and already pretty far gone.

When I read First Heretic, it is heavily implied that the Night Lords were not that far gone, and were quite disgusted with the Word Bearers (and most notably, the named characters of the book who are altered)

ElectricPaladin wrote:Look at it this way - the Cabal is run, at least partly, by Eldar farseers.

You know, the leaders of Eldar society.

The ones who helped the Eldar successfully prevent the destruction of their civilization, preventing the birth of the fourth chaos god and the fragmentation of their society into warring factions, doomed to wander the galaxy trapped in an endless cycle of...

The role of Farseer didn't develop until near the end of the Fall. Well too late to do any of the things you think they could have stopped.


Automatically Appended Next Post:

Brother Coa wrote:I have a question regarding Alpha Legion.

Why don't they destroy Ultramarines

Because they can't. It isn't logistically possible for them.

Durza wrote:Imagine if Calgar was actually an Alpha...

That would take some sort of tacti-ALPHARIUUUUUUS!

On topic, I think the Alpha Legion are plotting the downfall of the Imperium regardless of their motives.

Alpharius/Omegon was never close to the Emporer and didn't exactly fit in with the other Legions or the ideals they held. They're probably renegade and out for themselves.

Brother Coa wrote:I have a question regarding Alpha Legion.

Why don't they destroy Ultramarines or any other first founding Chapter like they destroyed Crimson Consuls?

And please don't tell me it's because of the plot armor

Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

They also have a lot of operatives in the Inquisition, so if they really wanted to, they could probably get a few minor chapters excommunicated.

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

I like it

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

greatest conspiracy theory ever

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

But that would take some sort of tacti-ALPHARIUUUUUUS!

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

Hmm... you've forgotten about the deal that Omegon made with Ahriman. The 14th Black Crusade will in fact originate on Terra as the forces of Chaos pass through the Webway gate that the Thousand Sons finished while the Imperium was distracted by Angron's war on Armageddon, with the Emperor's Children splitting off and hunting down the last of the Eldar on the way along with a host of daemonettes.

Durza wrote:

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

Hmm... you've forgotten about the deal that Omegon made with Ahriman. The 14th Black Crusade will in fact originate on Terra as the forces of Chaos pass through the Webway gate that the Thousand Sons finished while the Imperium was distracted by Angron's war on Armageddon, with the Emperor's Children splitting off and hunting down the last of the Eldar on the way along with a host of daemonettes.

What? Of course not. Omegon would never let Abbadon's rabble go through the webway gate; if he did that the war would be over far too quickly, and Omegon might be cheated out of his victory by Abbadon.

No, the webway gate is for the Thousand Sons alone, who will slip through in secret to murder and replace the Adeptus Custodes just before the war begins. That will allow for the sudden annihilation of the High Lords at a crucial moment, throwing the Imperial response into confusion and allowing Omegon to revive Alpharius at just the right time to present him as Guilliman come back from the dead to save the Imperium!

I actually love where this is going

BeRzErKeR wrote:

Durza wrote:

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

Hmm... you've forgotten about the deal that Omegon made with Ahriman. The 14th Black Crusade will in fact originate on Terra as the forces of Chaos pass through the Webway gate that the Thousand Sons finished while the Imperium was distracted by Angron's war on Armageddon, with the Emperor's Children splitting off and hunting down the last of the Eldar on the way along with a host of daemonettes.

What? Of course not. Omegon would never let Abbadon's rabble go through the webway gate; if he did that the war would be over far too quickly, and Omegon might be cheated out of his victory by Abbadon.

No, the webway gate is for the Thousand Sons alone, who will slip through in secret to murder and replace the Adeptus Custodes just before the war begins. That will allow for the sudden annihilation of the High Lords at a crucial moment, throwing the Imperial response into confusion and allowing Omegon to revive Alpharius at just the right time to present him as Guilliman come back from the dead to save the Imperium!

And of course, Omegon took Drach'Nyen thousands of years before Abaddon ever got to it. Abbadon's using a cheap knock off.

Durza wrote:

BeRzErKeR wrote:

Durza wrote:

BeRzErKeR wrote:

Ensis Ferrae wrote:

Harriticus wrote:
Because they haven't been able to infiltrate them? It's like asking why the Israeli's caught Adolf Eichman but not Dr. Mangela.

According to almost ALL existing fluff, the Alphas HAVE infiltrated the Ultramarines, in fact it is insinuated in the existing fluff (forget where I read it), that they have infiltrated most of the current chapters and other organizations within the Imperium (though places like the Administratum and Ecclesiarchy are much easier without marines than the Adeptus Astartes)

The Alpha Legion ARE the Ultramarines. Guilliman never killed Alpharius; Alpharius underwent radical surgery and gene-therapy before the battle, then separated Guilliman from his troops, killed him from ambush, and took his place.

Admittedly, this did backfire somewhat when Fulgrim ended up stabbing Alpharius in the neck; that set back the grand plan by several hundred years at least, since Omegon didn't know who all of Alpharius's agents were. But it's back on schedule by now, and pretty soon Omegon will be able to activate the subconscious commands buried deep in the minds of 90% of the Ultramarine successor chapters and, with them and the radically-overstrength Ultramar Imperial Guard regiments, suddenly annex fully half of the Ultima Segmentum along with his Tau allies. The distraction provided by that should allow his agents within the Black Legion to lead a breakout from the Eye of Terror via the secret Warp-tunnel they've been constructing which loops over the galactic plane and drops them back into reality behind the Cadian Gate, causing Abbadon's (Or rather Omegon's) 14th Black Crusade to crumple the Imperial defenses and plunge the whole Segmentum Obscurus into chaos; after which, of course, the Alpha Legion operatives within the Black Legion First Company will assassinate Abbadon and splinter his forces into hundreds of competing warbands, to prevent them from attacking Terra before Omegon's Ultramarine armies can get there and assume full control.

(Disclaimer: The above was written purely for the lulz.)

Hmm... you've forgotten about the deal that Omegon made with Ahriman. The 14th Black Crusade will in fact originate on Terra as the forces of Chaos pass through the Webway gate that the Thousand Sons finished while the Imperium was distracted by Angron's war on Armageddon, with the Emperor's Children splitting off and hunting down the last of the Eldar on the way along with a host of daemonettes.

What? Of course not. Omegon would never let Abbadon's rabble go through the webway gate; if he did that the war would be over far too quickly, and Omegon might be cheated out of his victory by Abbadon.

No, the webway gate is for the Thousand Sons alone, who will slip through in secret to murder and replace the Adeptus Custodes just before the war begins. That will allow for the sudden annihilation of the High Lords at a crucial moment, throwing the Imperial response into confusion and allowing Omegon to revive Alpharius at just the right time to present him as Guilliman come back from the dead to save the Imperium!

And of course, Omegon took Drach'Nyen thousands of years before Abaddon ever got to it. Abbadon's using a cheap knock off.

Of course. A knock-off inhabited by a minor daemon personally loyal to Omegon. And with a hilt made of shaped explosives.