Disfigure

Target creature gets -2/-2 until end of turn.

Sangrophage

At the beginning of your upkeep, tap Sangrophage unless you pay 2 life.

Foul-Tongue Shriek

Target opponent loses 1 life for each attacking creature you control. You gain that much life.

Gray Merchant of Asphodel

When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Carnophage

At the beginning of your upkeep, tap Carnophage unless you pay 1 life.

Cast Down

Sign in Blood

Target player draws two cards and loses 2 life.

Chainer's Edict

Target player sacrifices a creature.
Flashback {5}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Dauthi Slayer

Shadow (This creature can block or be blocked by only creatures with shadow.)
Dauthi Slayer attacks each combat if able.

Swamp

Vampire Lacerator

At the beginning of your upkeep, you lose 1 life unless an opponent has 10 or less life.