Lexivore 

Creature — Beast
Whenever this creature deals damage to a player, destroy target permanent other than this creature with the most lines of text in its text box. (If two or more cards are tied, target any one of them.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL