Have

Eaten Alive

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

Bone Shards

As an additional cost to cast this spell, sacrifice a creature or discard a card.
Destroy target creature or planeswalker.

Greedy Freebooter

When this creature dies, scry 1 and create a Treasure token. (To scry 1, look at the top card of your library. You may put that card on the bottom. A Treasure token is an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Diabolic Edict

Target player sacrifices a creature of their choice.

Read the Bones

Scry 2, then draw two cards. You lose 2 life. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Dread Return

Return target creature card from your graveyard to the battlefield.
Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Doomed Dissenter

When this creature dies, create a 2/2 black Zombie creature token.

Feed the Swarm

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

Dark Ritual

Kaya's Ghostform

Enchant creature or planeswalker you control
When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.

Tattered Mummy

When this creature dies, each opponent loses 2 life.

Tragic Slip

Target creature gets -1/-1 until end of turn.
Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.

Charcoal Diamond

This artifact enters tapped.
{T}: Add {B}.

Blood Bairn

Sacrifice another creature: This creature gets +2/+2 until end of turn.

Gleaming Barrier

Defender
When this creature dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Swamp

Elvish Doomsayer

When this creature dies, each opponent discards a card.

Strands of Undeath

Enchant creature
When this Aura enters, target player discards two cards.
{B}: Regenerate enchanted creature.

Abyssal Gatekeeper

When this creature dies, each player sacrifices a creature of their choice.

Culling the Weak

As an additional cost to cast this spell, sacrifice a creature.
Add {B}{B}{B}{B}.

Worthy Cost

As an additional cost to cast this spell, sacrifice a creature.
Exile target creature or planeswalker.

Annihilating Glare

As an additional cost to cast this spell, pay {4} or sacrifice an artifact or creature.
Destroy target creature or planeswalker.

Basal Thrull

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

Bloodthrone Vampire

Sacrifice a creature: This creature gets +2/+2 until end of turn.

Virus Beetle

When this creature enters, each opponent discards a card.

Horror of Horrors

Sacrifice a Swamp: Regenerate target black creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Deadly Dispute

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Soul Channeling

Enchant creature
Pay 2 life: Regenerate enchanted creature.

Dutiful Attendant

When this creature dies, return another target creature card from your graveyard to your hand.

Shirei, Shizo's Caretaker

Whenever a creature with power 1 or less is put into your graveyard from the battlefield, you may return that card to the battlefield at the beginning of the next end step if Shirei is still on the battlefield.

Nezumi Informant

Thrull Retainer

Enchant creature
Enchanted creature gets +1/+1.
Sacrifice this Aura: Regenerate enchanted creature.

Arcane Signet

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

Corrupted Conviction

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

Night's Whisper

Falkenrath Torturer

Sacrifice a creature: This creature gains flying until end of turn. If the sacrificed creature was a Human, put a +1/+1 counter on this creature.

Soldevi Adnate

{T}, Sacrifice a black or artifact creature: Add an amount of {B} equal to the sacrificed creature's mana value.

Dark Privilege

Enchant creature
Enchanted creature gets +1/+1.
Sacrifice a creature: Regenerate enchanted creature.

Cadaver Imp

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

Leaden Myr

Viscera Seer

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Final Vengeance

As an additional cost to cast this spell, sacrifice a creature or enchantment.
Exile target creature.

Skeletal Grimace

Enchant creature
Enchanted creature gets +1/+1 and has "{B}: Regenerate this creature."

Bottle Gnomes

Sacrifice this creature: You gain 3 life.

Spark Harvest

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

Pilgrim's Eye

Flying
When this creature enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Dusk Legion Zealot

When this creature enters, you draw a card and you lose 1 life.

Village Rites

Novice Occultist

When this creature dies, you draw a card and you lose 1 life.

Fume Spitter

Sacrifice this creature: Put a -1/-1 counter on target creature.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Eviscerator's Insight

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards.
Flashback {4}{B} (You may cast this card from your graveyard for its flashback cost and any additional costs. Then exile it.)

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

Shambling Ghast

When this creature dies, choose one —
• Target creature an opponent controls gets -1/-1 until end of turn.
• Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Blood Pet

Costly Plunder

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

Perilous Myr

When this creature dies, it deals 2 damage to any target.

Infestation Sage

When this creature dies, create a 1/1 black and green Insect creature token with flying.

Elderfang Disciple

Sign in Blood

Target player draws two cards and loses 2 life.

Lampad of Death's Vigil

{1}, Sacrifice a creature: Each opponent loses 1 life and you gain 1 life.

Reckoner's Bargain

As an additional cost to cast this spell, sacrifice an artifact or creature.
You gain life equal to the sacrificed permanent's mana value. Draw two cards.

Thoughtpicker Witch

{1}, Sacrifice a creature: Look at the top two cards of target opponent's library, then exile one of them.

Duress

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

Snarling Gorehound

Menace
Whenever another creature you control with power 2 or less enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Serrated Scorpion

When this creature dies, it deals 2 damage to each opponent and you gain 2 life.

Bone Splinters

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

Altar's Reap

Burglar Rat

Skyscanner

Flying
When this creature enters, draw a card.

Carrion Feeder

This creature can't block.
Sacrifice a creature: Put a +1/+1 counter on this creature.