Mitchell, Arrogant Bastard

During your turn, opponents may put a creature from their graveyard into their hand by paying life equal to it's mana value. If an opponent put's a creature in their hand this way, you may cast a creature from your graveyard to the battlefield under your control without paying it's mana cost.
{4} Return target card from a graveyard to your hand, you may use mana as if it were any color to cast spells put into your hand this way.
{t} Mill 2 cards.