Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

Sacrifice a creature: Add {C}{C}.

Minion creatures get +1/+1.

{B}{B}{B}, Exile Balthor the Defiled: Each player returns all black and all red creature cards from their graveyard to the battlefield.

{T}, Sacrifice Basal Thrull: Add {B}{B}.

This spell costs {1} less to cast for each creature on the battlefield.

Blasphemous Act deals 13 damage to each creature.

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.

Sacrifice Blood Pet: Add {B}.

Sacrifice Blood Vassal: Add {B}{B}.

{B}, {T}, Discard a card: Add {B}{B}{B}.

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.

Flying

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

Carrion Feeder can't block.

Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Sacrifice Catalyst Elemental: Add {R}{R}.

When Cathodion dies, add {C}{C}{C}.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.

Spells you cast of the chosen type cost {1} less to cast.

Destroy all creatures. Each player loses life equal to the number of creatures they controlled that were destroyed this way.

Equipped creature gets +2/+2.

Whenever equipped creature dies, you may put a creature card from your hand onto the battlefield and attach Deathrender to it.

Equip {2}

Search your library for a card, put that card into your hand, then shuffle.

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

Search your library for a card, put that card into your hand, then shuffle.

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

Flash

When Garna, the Bloodflame enters the battlefield, return to your hand all creature cards in your graveyard that were put there from anywhere this turn.

Other creatures you control have haste.

Sacrifice a creature: Goblin Bombardment deals 1 damage to any target.

When Gravedigger enters the battlefield, you may return target creature card from your graveyard to your hand.

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Whenever another nontoken creature you control dies, draw a card.

Red creature spells you cast cost {1} less to cast.

Whenever you cast a creature spell, you may discard a card. If you do, draw a card.

Whenever a creature enters the battlefield under your control, Impact Tremors deals 1 damage to each opponent.

When Ingot Chewer enters the battlefield, destroy target artifact.

Evoke {R} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Menace (This creature can't be blocked except by two or more creatures.)

Discard a card, Sacrifice Insolent Neonate: Draw a card.

{T}: Add {R}.

{T}: Add {B}.

Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.

{1}{R}, {T}, Sacrifice Magus of the Wheel: Each player discards their hand, then draws seven cards.

Undergrowth -- Search your library for a black card with mana value less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle.

When Merciless Executioner enters the battlefield, each player sacrifices a creature.

Whenever a nontoken creature you control dies, Midnight Reaper deals 1 damage to you and you draw a card.

When Myr Moonvessel dies, add {C}.

Blue spells and red spells you cast cost {1} less to cast.

{1}{B}: Regenerate Nightscape Familiar.

Equipped creature gets +2/+2, has intimidate, and is a black Zombie. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay {4}. If you do, return that card to the battlefield and attach Nim Deathmantle to it.

Equip {4}

Discard a card, Sacrifice Overeager Apprentice: Add {B}{B}{B}.

{T}: Add {C}{C}.

Whenever Pawn of Ulamog or another nontoken creature you control dies, you may create a 0/1 colorless Eldrazi Spawn creature token. It has "Sacrifice this creature: Add {C}."

When Phyrexian Delver enters the battlefield, return target creature card from your graveyard to the battlefield. You lose life equal to that card's mana value.

{1}{B}, Pay 2 life: Return target creature card from your graveyard to your hand.

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

When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card.

When Priest of Gix enters the battlefield, add {B}{B}{B}.

When Priest of Urabrask enters the battlefield, add {R}{R}{R}.

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

Indestructible

As long as your devotion to red is less than five, Purphoros isn't a creature.

Whenever another creature enters the battlefield under your control, Purphoros deals 2 damage to each opponent.

{2}{R}: Creatures you control get +1/+0 until end of turn.

{1}, {T}: Add {B}{R}.

When Ravenous Chupacabra enters the battlefield, destroy target creature an opponent controls.

Imprint -- When Semblance Anvil enters the battlefield, you may exile a nonland card from your hand.

Spells you cast that share a card type with the exiled card cost {2} less to cast.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.

Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Devoid (This card has no color.)

Whenever another nontoken creature you control dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}." ({C} represents colorless mana.)

Flying

Discard a card: Add {B}.

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip {1}

Devoid (This card has no color.)

Flying

At the beginning of your upkeep, sacrifice a creature.

Whenever you sacrifice a creature, draw a card.

{T}: Add {C}{C}.

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

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

{1}: Soldevi Simulacrum gets +1/+0 until end of turn.

When Su-Chi dies, add {C}{C}{C}{C}.

{T}: Add {C}.

{T}: Add {B} or {R}. Talisman of Indulgence deals 1 damage to you.

Destroy target creature. It can't be regenerated.

{S}: Thermopod gains haste until end of turn. ({S} can be paid with one mana from a snow source.)

Sacrifice a creature: Add {R}.

First strike

Black spells and green spells you cast cost {1} less to cast.

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

{T}, Sacrifice two creatures: Return target creature card from your graveyard to the battlefield.

Haste

Whenever a creature an opponent controls dies, put a +1/+1 counter on Yahenni, Undying Partisan.

Sacrifice another creature: Yahenni gains indestructible until end of turn.

Whenever Zulaport Cutthroat or another creature you control dies, each opponent loses 1 life and you gain 1 life.