Mutilate

All creatures get -1/-1 until end of turn for each Swamp you control.

Go for the Throat

Fell

Spinal Embrace

Cast this spell only during combat.
Untap target creature you don't control and gain control of it. It gains haste until end of turn. At the beginning of the next end step, sacrifice it. If you do, you gain life equal to its toughness.

Damnation

Destroy all creatures. They can't be regenerated.

Withering Torment

Destroy target creature or enchantment. You lose 2 life.

Eaten Alive

As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}.
Exile target creature or planeswalker.

Doom Blade

Terror

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

Feed the Swarm

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.