Bone Splinters

As an additional cost to cast this spell, sacrifice a creature.
Destroy target creature.

Demon of Catastrophes

As an additional cost to cast this spell, sacrifice a creature.
Flying, trample

Go for the Throat

Skirsdag High Priest

Morbid — {T}, Tap two untapped creatures you control: Create a 5/5 black Demon creature token with flying. Activate only if a creature died this turn.

Abyssal Persecutor

Flying, trample
You can't win the game and your opponents can't lose the game.

Doomed Traveler

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

Carrier Thrall

When Carrier Thrall dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

Altar's Reap

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Hunted Witness

When Hunted Witness dies, create a 1/1 white Soldier creature token with lifelink.