Bring Down the Beast

Cast Bring Down the Beast only during another player's turn.
Target creature gets +X/+0 until end of turn and fights target creature an opponent controls. Then end the turn. (Exile all spells and abilities on the stack, including this card. The player whose turn it is discards down to his or her maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.