Voloth, Manastealer

+2: Exile a random card from target players hand, if that card was an instant or sorcery, you may cast it for its converted mana cost
-3: Look at target players hand, you may have them shuffle their hand into their library and draw 7 cards
-6: Put an emblem onto the battlefield with "You may choose to have an X in the mana cost or text of permanents you control to be infinity"