Acrol, Sultai Phoenix

Flying, deathtouch
Sacrifice Acrol, Sultai Phoenix and exile X cards
from your graveyard: This turn, you may play
target permanent card with converted mana cost
X or less from your graveyard.
Dredge 3 (If you would draw a card, you may mill
three cards instead. If you do, return this card from
your graveyard to your hand.