Ristvahk, Carnage of War

Menace, Trample
At the beginning of combat on your turn, you
may discard a card. If you do, Ristvahk deals X
damage divided as you choose among any number
of targets where X is the cards mana value.
Hellbent- When Ristvahk attacks, you
may put a creature card from your graveyard on
the battlefield tapped and attacking. You gain life
equal to its toughness. Sacrifice it at the
beginning of the next end step.