Jace, the Perfected Mind (57)

Compleated ( can be paid with or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.)
: Until your next turn, up to one target creature gets -3/-0.
: Target player mills three cards. Then if a graveyard has twenty or more cards in it, you draw three cards. Otherwise, you draw a card.
: Target player mills three times X cards.