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What's an aura? Rules basically say that any ability that affects some unit and has range is an aura. So, if a knight explodes, his explosion is also considered to be an aura?
What about disembark? And -1 to-hit outside 12?

Auras stay in place while the model is on the table.
Explosions are not long-term, and the model is usually removed straight away.
Explosions are not auras.

But they have a radius and affect units. There's nothing about staying in place.

There's nothing in the rules saying that an aura is only something that's affecting models while it's on the table, just that it's an ability that affects models within a range. By that definition, the explosion of a Knight should be considered an "aura", just one that's often a negative rather than a positive.

Do character auras affect themselves? Like khorne character locus and OOO +1 hit?

As far as I know, this has never been directly addressed, but I would say no.

The rule specifically states that aura abilities are abilities that "affect certain models within a given range." Their example is "affects all DEATH GUARD models within 7" of him." Since "Explodes" is not constantly active and is frequently random in terms of what units it will impact, I would say that it does not count as an aura ability.

Also, there are a lot of abilities that "double the range of auras" or other silliness. Tanks exploding twice as hard just because they're near a character doesn't make much sense, unless that character is Sly Marbo.

Btw, is there a definition of ability?

I'm asking because there's a necron character that can turn off auras of characters.

And there's no good definition of what an aura is

 Ratius wrote:
Do character auras affect themselves? Like khorne character locus and OOO +1 hit?

Yes, usually. "Unless the ability in question says otherwise, a model with a rule like this is always within range of the effect."


Automatically Appended Next Post:

 koooaei wrote:
Btw, is there a definition of ability?

I'm asking because there's a necron character that can turn off auras of characters.

And there's no good definition of what an aura is

Yes. It's anything under the "Abilities" section of the model sheet.

Ah, the real reason for the question.
Auras apply to a model when it moves into the aura range, and stops when they move out.
The disembark range is not an aura. Moving in or out of that distance has no affect on the models moving.
And similar to that. Auras stop and start working when a model moved between the aura's range.

From 'Aura Abilities', page 179 of the Warhammer 40,000 Main Rulebook:

AURA ABILITIES

Some units – usually CHARACTERS – have abilities that affect certain models within a given range. Unless the ability in question says otherwise, a model with a rule like this is always within range of the effect.

Notice the use of the word 'ability' multiple times. Is a vehicle explosion listed as an ability (i.e., it is in the 'Abilities' section of the datasheet) of the unit in question? If not, then it's not an 'aura ability'.

Where are you getting the move part from? Can't find it in the rules

AURA ABILITIES

Some units – usually CHARACTERS – have abilities that affect certain models within a given range.

If you move into that range, it applies.
If you move out of that range, it stops.
That is implied and not stated, but is HIWPI.

 Skinnereal wrote:

AURA ABILITIES

Some units – usually CHARACTERS – have abilities that affect certain models within a given range.

If you move into that range, it applies.
If you move out of that range, it stops.
That is implied and not stated, but is HIWPI.

Not always. Some auras only determine who's in range at one specific point in time, etc. It all depends on the Aura Ability in question.

Nemesor zandrekh can temporarily disable aura abilities from characters :

Counter tactics

At the beginning of your opponent's turn, choose one enemy CHARACTER within 12" of Nemesor Zahndrekh. Any aura abilities that character has cannot be used until the beginning of your opponent's next turn.

I had given this some thought if its possible to disable aura abilities from an IK, some are CHARACTERS. But i dont think their ability "super heavy walker" fits the description of an aura ability.

Aura Abilities
Some units – usually
Characters – have
abilities that affect certain
models within a given
range. Unless the ability in
question says otherwise, a
model with a rule like this
is always within range of
the effect.

Super heavy walker

This model can Fall Back in the Movement phase and still shoot and/or charge in the same turn. When this model Falls Back, it can move over enemy INFANTRY and SWARM models, though it must end its move more than 1" from any enemy units. In addition, this model can move and fire Heavy weapons without suffering the penalty to its hit rolls. Finally, this model only gains a bonus to its save for being in cover if at least half of the model is obscured from the firer.

Except, that ability isn't an aura ability, p5freak, as it doesn't affect models within a range, but rather is a restriction on where that model can move. As such, while that is an ability on the Knight sheet, I don't think it would qualify as an aura ability. The other one, just as other auras, states that it affects units within a certain range.

 Yarium wrote:
Except, that ability isn't an aura ability, p5freak, as it doesn't affect models within a range, but rather is a restriction on where that model can move. As such, while that is an ability on the Knight sheet, I don't think it would qualify as an aura ability. The other one, just as other auras, states that it affects units within a certain range.

Well thats what i said, i dont think its an aura ability. Note that nemesor shuts down all abilities for one turn. Question is, if the knight player plays the stratagem ion aegis, which protects friendly units within 6" of the knight with a 5+ inv sv, does it become an aura ability ? It certainly fits the description of an aura ability.

Well it affects models that can be moved over

 p5freak wrote:

 Yarium wrote:
Except, that ability isn't an aura ability, p5freak, as it doesn't affect models within a range, but rather is a restriction on where that model can move. As such, while that is an ability on the Knight sheet, I don't think it would qualify as an aura ability. The other one, just as other auras, states that it affects units within a certain range.

Well thats what i said, i dont think its an aura ability. Note that nemesor shuts down all abilities for one turn. Question is, if the knight player plays the stratagem ion aegis, which protects friendly units within 6" of the knight with a 5+ inv sv, does it become an aura ability ? It certainly fits the description of an aura ability.

Nope, that's a stratagem, not an aura. An aura is an ABILITY that affects certain models within a given range. If it's not listed within the "Abilities" section on a unit sheet, it can't be an aura. If it doesn't have a range, it can't be an aura.

I would also argue that if it isn't a persistent ability, like "Explodes", then it can't be an aura. For instance, Necron Overlords have MWBD, which you choose to apply to a specific unit near you. Since it's not a constant area of effect, it's not an aura.

Archebius wrote:

I would also argue that if it isn't a persistent ability, like "Explodes", then it can't be an aura. For instance, Necron Overlords have MWBD, which you choose to apply to a specific unit near you. Since it's not a constant area of effect, it's not an aura.

Rule citation please where it says that aura abilities are permanent.

He said persistant, not permanent. We know that they aren't permanent because if the model with the aura embarks in a transport his aura won't affect other units while he's embarked.

RaW Explosions are an "aura". It's that simple.

As above. RAW aura is defined as an ability that a model/unit has that affects models/units within a certain distance.

The RAW needs to be clarified to encompass what we would normally consider an aura, but RAW, any abilities that fulfill the above conditions are aura abilities for all gaming purposes.

Easy way for GW to define aura is to include keyword [Aura] and differentiate similar non-aura abilities as [Area Effect].

Archebius wrote:

I would also argue that if it isn't a persistent ability, like "Explodes", then it can't be an aura. For instance, Necron Overlords have MWBD, which you choose to apply to a specific unit near you. Since it's not a constant area of effect, it's not an aura.

The rules dont say anything about an aura ability being persistent, or not. MWBD fits the description in the rules perfectly, thus its an aura ability.

 doctortom wrote:
He said persistant, not permanent. We know that they aren't permanent because if the model with the aura embarks in a transport his aura won't affect other units while he's embarked.

Any aura ability written on the datasheet of a model is permanent (unless it says otherwise on the datasheet), but its effect sometimes isnt. A SM captain still has his re-roll 1s aura ability when embarked on a transport, but he cant affect other models with it, because he isnt on the battlefield.

The Space Wolves Warlord Trait 'Saga of Majesty' confirms 'Explodes' and other distance-based effects are aura abilities:

"In addition, if they are a CHARACTER increase the range of any aura abilities they have by 3" (e.g. the Great Wolf and Jarl of Fenris), excluding Explodes, Healing Balms, Battlesmith, abilities of Relics of the Fang and effects of psychic powers."

Plainly, if they weren't, there would be no need to exclude them above.

 Mr. Shine wrote:
The Space Wolves Warlord Trait 'Saga of Majesty' confirms 'Explodes' and other distance-based effects are aura abilities:

"In addition, if they are a CHARACTER increase the range of any aura abilities they have by 3" (e.g. the Great Wolf and Jarl of Fenris), excluding Explodes, Healing Balms, Battlesmith, abilities of Relics of the Fang and effects of psychic powers."

Plainly, if they weren't, there would be no need to exclude them above.

Likewise, there is an Imperial Guard trait that applies to all abilities, and doesn't exclude explodes. There is also a Necron one that does exclude explodes.

I think GW realised they messed up with the IG one but never bothered to correct it, and just added the exceptions going forward.

It also confirms that when they say "abilities" they mean that in line with common usage rather than the named section on datasheets.

 Mr. Shine wrote:
The Space Wolves Warlord Trait 'Saga of Majesty' confirms 'Explodes' and other distance-based effects are aura abilities:

"In addition, if they are a CHARACTER increase the range of any aura abilities they have by 3" (e.g. the Great Wolf and Jarl of Fenris), excluding Explodes, Healing Balms, Battlesmith, abilities of Relics of the Fang and effects of psychic powers."

Plainly, if they weren't, there would be no need to exclude them above.

Got to love GW's writers when they make IG commander shout so loud tanks explode bigger Just shows how illogical ruleset 8th is.

Relics of the fang are not abilities and thus can't be considered to be auras in the first place.

 koooaei wrote:
Relics of the fang are not abilities and thus can't be considered to be auras in the first place.

It says "abilities of Relics of the Fang" so not the relics themselves.

tneva82 wrote:

 Mr. Shine wrote:
The Space Wolves Warlord Trait 'Saga of Majesty' confirms 'Explodes' and other distance-based effects are aura abilities:

"In addition, if they are a CHARACTER increase the range of any aura abilities they have by 3" (e.g. the Great Wolf and Jarl of Fenris), excluding Explodes, Healing Balms, Battlesmith, abilities of Relics of the Fang and effects of psychic powers."

Plainly, if they weren't, there would be no need to exclude them above.

Got to love GW's writers when they make IG commander shout so loud tanks explode bigger Just shows how illogical ruleset 8th is.

What would make sense in the real world has no bearing on the 40k ruleset

Real World Common Sense/Real World Logic/How it works in the real world has no bearing on the 40k ruleset.

Remember: The rules were not written to be "Modern day real world" logical.

The rules are an abstract system used to simulate a battle in the year 40,000.

What would happen in the modern day real world has nothing to do with the RAW, or the simulation of a battle fought 38,000 years from now. (and maybe not even on a planet with the same physical makeup as our earth, and probably different physics as well).