Q76 Is there an ability to change the stat a DC is keyed to? Specifically, the save DC for a poison attack from Con to really anything else at all. The creature will become undead, eventually, and I'd rather not have to invest a ton into repumping the save when the con goes null. I thought there was a feat in Libris Mortis that changed Poison DCs to use Cha instead of Con, but can't find it, and may have been dreaming it. Anything at all?
Edit: I am a complete dumbass. Found it.
Monster Manual, page 300, under calculating saving throw DCs:
"Also use Charisma for any DC that normally would be based on an ability score the creature does not have. For example, undead creatures have no Constitution score, so any poison attacks the have would use Charisma to determine the save DC."
Knew I wasn't hallucinating.