u/JournalistShoddy9496

So I noticed it's rather difficult to kill a troll without using acid or fire (i.e. the regeneration). Its a neat mechanic.

Out of curiosity, is there another monster in 5.5e -- not counting legacy or 3rd party material -- that has a "special requirement" before it can be killed (i.e. just subtracting it's Hit Points to zero won't work).