Whisker, Rodent Prodigy

+1: Exchange control of target creature you control and up to one target creature an opponent controls until end of turn. Untap both creatures.
-2: Exile the top card of target player's library. You may cast that card, and you may spend mana on it as though it were mana of any color.
-8: Exile all creatures, then return them to the battlefield under your control tapped.