Holy Pyre and Fire Resistant Demons

[Vynd]

If there was a way to change the spell so that it affected all demons and devils at full strength, regardless of fire resistance, I would like that. There aren't many spells that are specifically targeted against demons, so it is odd that one fo the few that is supposed to be particularly strong against them is in fact ineffective against many of them.

On the other hand, I think it would be a mistake to change the spell so that its damage type is holy, or something like that. Because it ought to be possible for a non-demonic/undead unit with fire resistance to be able to protect themselves. The spell would definitely be too strong if there was no way for anyone to resist it, even if most units did not take triple damage.

I think this is what Cainehill is getting at with his suggestion to make the basic damage fire and the tripling holy. But does the spell really work that way? If it generates the base fire damage and then triples it, then against a fire resistant target the base damage would be zero and so would the triple damage, wouldn't it?