Essence Drain

Essence Drain deals 3 damage to any target and you gain 3 life.

Unholy Strength

Enchant creature
Enchanted creature gets +2/+1.

Mind Rot

Bottle Gnomes

Sacrifice this creature: You gain 3 life.

Mortivore

Mortivore's power and toughness are each equal to the number of creature cards in all graveyards.
{B}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Drudge Skeletons

{B}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Dross Crocodile

Demon's Horn

Whenever a player casts a black spell, you may gain 1 life.

Diabolic Tutor

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

Gravedigger

When this creature enters, you may return target creature card from your graveyard to your hand.

Cruel Edict

Target opponent sacrifices a creature of their choice.

Consume Spirit

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

Vampire Bats

Flying (This creature can't be blocked except by creatures with flying or reach.)
{B}: This creature gets +1/+0 until end of turn. Activate no more than twice each turn.

Thrull Surgeon

{1}{B}, Sacrifice this creature: Look at target player's hand and choose a card from it. That player discards that card. Activate only as a sorcery.

Severed Legion

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Swamp

Looming Shade

{B}: This creature gets +1/+1 until end of turn.

Mass of Ghouls

Assassinate

Ascendant Evincar

Flying (This creature can't be blocked except by creatures with flying or reach.)
Other black creatures get +1/+1.
Nonblack creatures get -1/-1.