Creatures and foes with higher level and CR offers additional effects on critical hits. Like:
Attacks: Slam 31d6+5/19-20 (x2 + Disease on critical hit)
A player with heavy fortification will ignore the x2 part and will take normal damage.
Does (any kind of) fortification also ignore supernatural or spell-like effects like disease in this scenario?
That effect permanenetly reduces a living Opponent's wisdom by 2d4 when the creature hits with its head spike,or twice that amount on a critical hit.This book is 3e, not 3.5, but erreta do not include any fix for that description so we cana ssume it is also valid for 3.5ed
Maybe there could be other similar effects for other creatures somewhere in the MM's or other books that contains monster descriptions.
– Mp0int Dec 08 '18 at 23:15