Howl from Beyond

Target creature gets +X/+0 until end of turn.

Swamp

Ebon Praetor

First strike, trample
At the beginning of your upkeep, put a -2/-2 counter on this creature.
Sacrifice a creature: Remove a -2/-2 counter from this creature. If the sacrificed creature was a Thrull, put a +1/+0 counter on this creature. Activate only during your upkeep and only once each turn.

Terror

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

Abyssal Specter

Flying
Whenever this creature deals damage to a player, that player discards a card.

Blood Pet

Dark Ritual

Drain Life

Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.

Breeding Pit

At the beginning of your upkeep, sacrifice this enchantment unless you pay {B}{B}.
At the beginning of your end step, create a 0/1 black Thrull creature token.

Tourach's Gate

Enchant land you control
Sacrifice a Thrull: Put three time counters on this Aura.
At the beginning of your upkeep, remove a time counter from this Aura. If there are no time counters on this Aura, sacrifice it.
Tap enchanted land: Attacking creatures you control get +2/-1 until end of turn. Activate only if enchanted land is untapped.

Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.
{B}: This enchantment deals 1 damage to each creature and each player.

Thrull Champion

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

Necrite

Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, destroy target creature defending player controls. It can't be regenerated.

Gravedigger

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

Lord of the Pit

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you.

Basal Thrull

{T}, Sacrifice this creature: Add {B}{B}.

Armor Thrull

{T}, Sacrifice this creature: Put a +1/+2 counter on target creature.

Mindstab Thrull

Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, defending player discards three cards.