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.

Swamp

Forest

Daemogoth Titan

Whenever this creature attacks or blocks, sacrifice a creature.

Unmarked Grave

Search your library for a nonlegendary card, put that card into your graveyard, then shuffle.

Grisly Salvage

Reveal the top five cards of your library. You may put a creature or land card from among them into your hand. Put the rest into your graveyard.

Final Parting

Search your library for two cards. Put one into your hand and the other into your graveyard. Then shuffle.

Corpsejack Menace

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead.

Death's Shadow

This creature gets -X/-X, where X is your life total.

Force of Savagery

Jarad's Orders

Search your library for up to two creature cards and reveal them. Put one into your hand and the other into your graveyard. Then shuffle.