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Ok so maybe i'm going out on a limb here, and I fear I know the answer to this question unfortunately but here goes..

So we all know how screamer star works, heralds hoping for forewarning to cast on tzeentch daemons to then use grimoire to bump that 4++ to a 2++ reroll 1s.
My only question is why this is possible with how modifiers work.
On pg 2 there are the rules for modifiers and there are multiplicative, additive, and set modifiers, interestingly enough that is also the order in which you apply modifiers, with few exceptions where noted (ie markerlights).
So grimoire is pretty obviously an additive modifier, and forewarning is a set modifier as it neither is multiplicative or additive in its nature or wording, but lays down the value at which the invulnerable save becomes.
So here is where my train of thought heads, if additives come before set modifers and forewarning is a set modifier wouldn't that mean it doesn't stack with grimoire as it happens last after the invul is modified and then is changed to 4++?

anyways just a question, makes no difference to me either way. Discuss.

Forewarning isn't a set modifier. It's a new save, which would then be subject to the additive modifier. You'll note that no where in it's wording does it include language that modifies an existing save likes "sets" or "replaces".

As above it I is a new save, they still have their 5++. One goes to 3, the other 2

how is it a new save as opposed to a set modifier? does it not give a set save at 4++? the wording is whilst the ability is in effect the unit has a 4++? does that not modify someones save of say like a unit without an invul to having a 4++ then?
Why is it not a modifier?

If you're saying that Forewarning is a set modifier, then why also is the Daemon rule not a set modifier?
If the Daemon rule is a set modifier, it would occur AFTER the Grimoire pops, meaning Daemons affected by the Grimoire would still be at a 5++. And that doesn't make any sense.
Forewarning is a new save: it is granted in the same way Uncanny Reflexes, Daemon, Termie Armour, or any other wargear/special rule is granted.

The cover save for area terrain is a new save, not a set modifier. How is Forewarning any different than area terrain?

Idk ha it isn't wargear or anything and cover isn't a characteristic.


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Also I am just asking as to why, not saying it is or not, just thought it would be idk..


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I also kind've already knew the answer to this one, just being hopeful lol.

The rules for 'Modifiers' on page 2 are not applicable as 'Forewarning' provides an additional, separate, invulnerable save, rather than modifying an existing characteristic.

But forewarning doesnt modify anything at all, it just gives a flat inv save which can then be modified from there.

 Imperator_Class wrote:
But forewarning doesnt modify anything at all, it just gives a flat inv save which can then be modified from there.

I believe that's what I said.