Daemogoth Titan

Whenever Daemogoth Titan attacks or blocks, sacrifice a creature.

Yargle and Multani

Brawn

Trample
As long as Brawn is in your graveyard and you control a Forest, creatures you control have trample.

Force of Savagery

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.