Chain Devil

Animate Chains — When Chain Devil enters the battlefield, each player sacrifices a nontoken creature.

Elderfang Disciple

When Elderfang Disciple enters the battlefield, each opponent discards a card.

Arterial Flow

Each opponent discards two cards. If you control a Vampire, each opponent loses 2 life and you gain 2 life.

Dragon Blood

{3}, {T}: Put a +1/+1 counter on target creature.

Davriel's Shadowfugue

Target player discards two cards and loses 2 life.

Archetype of Finality

Creatures you control have deathtouch.
Creatures your opponents control lose deathtouch and can't have or gain deathtouch.

Cackling Fiend

When Cackling Fiend enters the battlefield, each opponent discards a card.

Cruel Edict

Bad Deal

You draw two cards and each opponent discards two cards. Each player loses 2 life.

Geth's Grimoire

Whenever an opponent discards a card, you may draw a card.

Delirium Skeins

Basilisk Collar

Equipped creature has deathtouch and lifelink.
Equip {2}

Distress

Target player reveals their hand. You choose a nonland card from it. That player discards that card.

Anowon, the Ruin Sage

At the beginning of your upkeep, each player sacrifices a non-Vampire creature.

Gorgon's Head

Equipped creature has deathtouch.
Equip {2}

Swamp

Black Cat

When Black Cat dies, target opponent discards a card at random.

Abyssal Gatekeeper

When Abyssal Gatekeeper dies, each player sacrifices a creature.

Gruesome Discovery

Target player discards two cards.
Morbid — If a creature died this turn, instead that player reveals their hand, you choose two cards from it, then that player discards those cards.

Harsh Scrutiny

Target opponent reveals their hand. You choose a creature card from it. That player discards that card. Scry 1.

Abyssal Horror

Flying
When Abyssal Horror enters the battlefield, target player discards two cards.

Dragon's Claw

Whenever a player casts a red spell, you may gain 1 life.

Grave Exchange

Return target creature card from your graveyard to your hand. Target player sacrifices a creature.

Sol Ring

Fell Specter

Flying
When Fell Specter enters the battlefield, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.

Etched Familiar

When Etched Familiar dies, each opponent loses 2 life and you gain 2 life.

Burnished Hart

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Butcher of Malakir

Flying
Whenever Butcher of Malakir or another creature you control dies, each opponent sacrifices a creature.

Fleshbag Marauder

When Fleshbag Marauder enters the battlefield, each player sacrifices a creature.

Abyssal Specter

Flying
Whenever Abyssal Specter deals damage to a player, that player discards a card.

Crawlspace

No more than two creatures can attack you each combat.

Bontu's Monument

Black creature spells you cast cost {1} less to cast.
Whenever you cast a creature spell, each opponent loses 1 life and you gain 1 life.

Capital Punishment

Council's dilemma — Starting with you, each player votes for death or taxes. Each opponent sacrifices a creature for each death vote and discards a card for each taxes vote.

Fugue

Dredge the Mire

Each opponent chooses a creature card in their graveyard. Put those cards onto the battlefield under your control.

Arcane Encyclopedia

Chrome Cat

When Chrome Cat enters the battlefield, scry 1.

Deadbridge Shaman

When Deadbridge Shaman dies, target opponent discards a card.

Tergrid's Lantern

{T}: Target player loses 3 life unless they sacrifice a nonland permanent or discard a card.
{3}{B}: Untap Tergrid's Lantern.

Tergrid, God of Fright

Menace
Whenever an opponent sacrifices a nontoken permanent or discards a permanent card, you may put that card from a graveyard onto the battlefield under your control.

Tergrid, God of Fright // Tergrid's Lantern

Bellowing Mauler

At the beginning of your end step, each player loses 4 life unless they sacrifice a nontoken creature.

Gibbering Descent

At the beginning of each player's upkeep, that player loses 1 life and discards a card.
Hellbent — Skip your upkeep step if you have no cards in hand.
Madness {2}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Barter in Blood

Cerebral Confiscation

Choose one —
• Target opponent discards two cards.
• Target opponent reveals their hand. You choose a nonland card from it. That player discards that card.

Feral Abomination

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Haunting Hymn

Target player discards two cards. If you cast this spell during your main phase, that player discards four cards instead.

Burglar Rat

When Burglar Rat enters the battlefield, each opponent discards a card.

Abyssal Nocturnus

Whenever an opponent discards a card, Abyssal Nocturnus gets +2/+2 and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Abyssal Gorestalker

When Abyssal Gorestalker enters the battlefield, each player sacrifices two creatures.

Assassin's Strike

Destroy target creature. Its controller discards a card.

Alley Grifters

Whenever Alley Grifters becomes blocked, defending player discards a card.

Braids's Frightful Return

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)
I — You may sacrifice a creature. If you do, each opponent discards a card.
II — Return target creature card from your graveyard to your hand.
III — Target opponent may sacrifice a nonland, nontoken permanent. If they don't, they lose 2 life and you draw a card.

Elvish Doomsayer

When Elvish Doomsayer dies, each opponent discards a card.

Diabolic Edict

Call to the Grave

At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature.
At the beginning of the end step, if no creatures are on the battlefield, sacrifice Call to the Grave.

Demon's Horn

Whenever a player casts a black spell, you may gain 1 life.

Blood Seeker

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

Davriel, Rogue Shadowmage

At the beginning of each opponent's upkeep, if that player has one or fewer cards in hand, Davriel, Rogue Shadowmage deals 2 damage to them.
−1: Target player discards a card.

Dark Deal

Each player discards all the cards in their hand, then draws that many cards minus one.

Awaken the Erstwhile

Each player discards all the cards in their hand, then creates that many 2/2 black Zombie creature tokens.

Corrupt Court Official

When Corrupt Court Official enters the battlefield, target opponent discards a card.

Caustic Hound

When Caustic Hound dies, each player loses 4 life.

Bad Moon

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Geth's Verdict

Target player sacrifices a creature and loses 1 life.

Creeping Dread

At the beginning of your upkeep, each player discards a card. Each opponent who discarded a card that shares a card type with the card you discarded loses 3 life. (Players reveal the discarded cards simultaneously.)

Consuming Vapors

Target player sacrifices a creature. You gain life equal to that creature's toughness.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)