Exhumer Thrull

Haunt (When this creature dies, exile it haunting target creature.)
When Exhumer Thrull enters or the creature it haunts dies, return target creature card from your graveyard to your hand.

Kingpin's Pet

Flying
Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Blood Vassal

Grasping Thrull

Flying
When Grasping Thrull enters, it deals 2 damage to each opponent and you gain 2 life.

Basal Thrull

Dark Ritual

Blood Pet

Absolver Thrull

Haunt (When this creature dies, exile it haunting target creature.)
When Absolver Thrull enters or the creature it haunts dies, destroy target enchantment.

Thrull Champion

Thrull creatures get +1/+1.
{T}: Gain control of target Thrull for as long as you control Thrull Champion.