Varolz, the Scar-Striped

Each creature card in your graveyard has
scavenge. The scavenge cost is equal to its mana
cost. (Exile a creature card from your graveyard and
pay its mana cost: Put a number of +1/+1 counters
equal to that card's power on target creature. Scavenge
only as a sorcery.)
Sacrifice another creature: Regenerate
Varolz, the Scar-Striped.