An Eloquence Bard that just screams at you to do better, be better, and stop slacking.Also, "bard most likely to undermine the party." I'm sure that one has some good contenders.
Decks don't kill campaigns. DMs who put the Deck in campaigns kill campaigns.Along a similar vein, I was thinking "Deck of Many Things".
Even Lesser Deck of Many Things in Castle Amber can potentially kill a campaign. Almost happenned to me.Decks don't kill campaigns. DMs who put the Deck in campaigns kill campaigns.
Lolth seems like she should be tops in a category, but I'm not sure what the category could be. "Evil god(dess)" has lots of contenders, and arguably Tiamat fits that one as well. Is "spider" too narrow to be its own category?