Urza's Armor

If a source would deal damage to you, prevent 1 of that damage.

Binding Agony

Enchant creature
Whenever enchanted creature is dealt damage, this Aura deals that much damage to that creature's controller.

Dark Ritual

Blood Pet

Wicked Akuba

{B}: Target player dealt damage by this creature this turn loses 1 life.

Thrashing Wumpus

{B}: This creature deals 1 damage to each creature and each player.

Culling the Weak

As an additional cost to cast this spell, sacrifice a creature.
Add {B}{B}{B}{B}.

Soul Burn

Spend only black and/or red mana on X.
Soul Burn deals X damage to any target. You gain life equal to the damage dealt, but not more than the amount of {B} spent on X, the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.

Ragged Veins

Flash
Enchant creature
Whenever enchanted creature is dealt damage, its controller loses that much life.

Fevered Convulsions

{2}{B}{B}: Put a -1/-1 counter on target creature.

Death Pits of Rath

Whenever a creature is dealt damage, destroy it. It can't be regenerated.

Fatal Blow

Destroy target creature that was dealt damage this turn. It can't be regenerated.

Swallowing Plague

Swallowing Plague deals X damage to target creature and you gain X life.

Drain Life

Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.

Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.
{B}: This enchantment deals 1 damage to each creature and each player.

Crypt Rats

{X}: This creature deals X damage to each creature and each player. Spend only black mana on X.