Jace, the Perfected Mind

Completed ({p/u} can be paid with {u} or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.)
^+1: Until your next turn, up to one target creature gets -3/-0.

v-2: 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.

v-X:Target player mills three times X cards.