Heiteng, the Graveblade

Whenever Heiteng, the Graveblade attacks, you
may pay 3 life and put a creature card from your
hand onto the battlefield tapped and attacking.
If you do, sacrifice it at the end of your turn.
Whenever Heiteng, the Graveblade leaves the
battlefield, create a 1/1 white Spirit Warrior
creature token with flying for each creature card
in your graveyard.