Barter in Blood

Each player sacrifices two creatures of their choice.

Hissing Miasma

Whenever a creature attacks you, its controller loses 1 life.

Swamp

Poisonbelly Ogre

Whenever another creature enters, its controller loses 1 life.

Soul Feast

Target player loses 4 life and you gain 4 life.

Curse of Wizardry

As Curse of Wizardry enters, choose a color.
Whenever a player casts a spell of the chosen color, that player loses 1 life.

Blood Seeker

Whenever a creature an opponent controls enters, you may have that player lose 1 life.

Cabal Coffers

{2}, {T}: Add {B} for each Swamp you control.

Corrupt

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

Blood Tithe

Each opponent loses 3 life. You gain life equal to the life lost this way.

Sorin's Vengeance

Sorin's Vengeance deals 10 damage to target player or planeswalker and you gain 10 life.

Sorin Markov

+2: Sorin Markov deals 2 damage to any target and you gain 2 life.
−3: Target opponent's life total becomes 10.
−7: You control target player during that player's next turn.

Exquisite Blood

Whenever an opponent loses life, you gain that much life.

Consume Spirit

Spend only black mana on X.
Consume Spirit deals X damage to any target and you gain X life.