The Birth of Mewtwo

I: Target player mills cards until they mill a
creature card. Exile that creature.
II: Search your deck for a black creature, put it
in your hand, and shuffle your deck.
III: Choose one.
•Until end of turn you may cast a card exiled by
The Birth of Mewtwo, using mana as mana of
any color.
•Creatures you play cost {2} less to cast this turn.