Chien-Pao, Ruinous Sword

Sword of Ruin {u}{u}: When this creature attacks, all defending creatures get -0/-1 until end of turn

Ruination {x}: Your opponent must look at the top X cards of their library, where X is the mana used to cast this spell and choose a creature card, they take half the combined Strength and Toughness of that creature, and then discards that creature.

Sometimes when it snows, I go out and play in
the snow with Chien-Pao! -Shelby, the Friendly Sheep