Infest

All creatures get -2/-2 until end of turn.

Essence Extraction

Essence Extraction deals 3 damage to target creature and you gain 3 life.

Skinrender

When this creature enters, put three -1/-1 counters on target creature.

Murder

Lightning Strike

Lightning Strike deals 3 damage to any target.

Ultimate Price

Falkenrath Noble

Flying
Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

Murderous Cut

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Destroy target creature.

Vampire Nighthawk

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Shock

Grasp of Darkness

Target creature gets -4/-4 until end of turn.

Doom Blade

Ulcerate

Target creature gets -3/-3 until end of turn. You lose 3 life.

Ravenous Chupacabra

When this creature enters, destroy target creature an opponent controls.

Flaying Tendrils

Devoid (This card has no color.)
All creatures get -2/-2 until end of turn. If a creature would die this turn, exile it instead.

Plaguecrafter

When this creature enters, each player sacrifices a creature or planeswalker of their choice. Each player who can't discards a card.

Death Wind

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

Vindictive Vampire

Whenever another creature you control dies, this creature deals 1 damage to each opponent and you gain 1 life.