Topple

Sorcery    (CMC:3)

Remove target creature with the greatest power from the game. (If two or more creatures are tied for greatest power, target only one of them.)

"Let all witness the fate of those who defy me." —Crovax

24 NE • ENDaren Bader

™ & © 1993—2000 Wizards of the Coast

Legal in: Masques Block,Legacy,Vintage,Commander

Oracle Text (click to copy):

10/4/2004
It can only target a creature with the greatest power. This means you pick such a creature on announcement, and if that creature is not still the one with greatest power on resolution, then this spell is countered since its target is illegal.