{1}, {T}, Sacrifice a creature: You gain 4 life. {1}, {T}, Sacrifice a creature named Festering Newt: Each opponent loses 4 life. You gain life equal to the life lost this way.

{3}, Sacrifice a creature: Draw a card.

Charcoal Diamond enters the battlefield tapped. {T}: Add {B}.

Corrupted Grafstone enters the battlefield tapped. {T}: Choose a color of a card in your graveyard. Add one mana of that color.

Whenever one or more creature cards leave your graveyard, create a 1/1 black Bat creature token with flying.

{T}: Add {C}. {T}: Roll the planar die. Activate only as a sorcery.

{T}: Add {C}{C}. {2}, {T}, Sacrifice Hedron Archive: Draw two cards.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

Nyx Lotus enters the battlefield tapped. {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

{T}: Add {C}. {1}, {T}: Add one mana of any color.

Runed Arch enters the battlefield tapped. {X}, {T}, Sacrifice Runed Arch: X target creatures with power 2 or less can't be blocked this turn.

{T}: Add {B}. Sacrifice Skull of Ramos: Add {B}.

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

Sacrifice a creature: Put a charge counter on Spawning Pit. {1}, Remove two charge counters from Spawning Pit: Create a 2/2 colorless Spawn artifact creature token.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

{2}, {T}: Target creature with power 2 or less can't be blocked this turn.

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

{1}{B}, {T}, Sacrifice a creature: You gain 1 life and draw a card.

When Abyssal Gatekeeper dies, each player sacrifices a creature.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When Aether Poisoner enters the battlefield, you get {E}{E} (two energy counters). Whenever Aether Poisoner attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.

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

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

Sacrifice Blood Pet: Add {B}.

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

{2}, {T}: Search your library for a card named Festering Newt or Bubbling Cauldron, put it onto the battlefield tapped, then shuffle.

Flying Echo {2}{B} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When Bone Shredder enters the battlefield, destroy target nonartifact, nonblack creature.

Sacrifice Bottle Gnomes: You gain 3 life.

Menace At the beginning of your precombat main phase, you may sacrifice a creature. When you do, choose a nonland card name, then target player reveals their hand and discards all cards with that name.

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

When Cauldron Familiar enters the battlefield, each opponent loses 1 life and you gain 1 life. Sacrifice a Food: Return Cauldron Familiar from your graveyard to the battlefield.

Flying When Chimney Imp dies, target opponent puts a card from their hand on top of their library.

Clattering Augur can't block. When Clattering Augur enters the battlefield, you draw a card and you lose 1 life. {2}{B}{B}: Return Clattering Augur from your graveyard to your hand.

{1}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.

Menace (This creature can't be blocked except by two or more creatures.) {2}{B}, Sacrifice another creature or planeswalker: Put two +1/+1 counters on Dreadmalkin.

When Dusk Legion Zealot enters the battlefield, you draw a card and you lose 1 life.

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

When Festering Newt dies, target creature an opponent controls gets -1/-1 until end of turn. That creature gets -4/-4 instead if you control a creature named Bogbrew Witch.

{T}: Add {C}. ({C} represents colorless mana.)

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

{T}: Add {B}.

{T}: Add {C}.

Mindless Automaton enters the battlefield with two +1/+1 counters on it. {1}, Discard a card: Put a +1/+1 counter on Mindless Automaton. Remove two +1/+1 counters from Mindless Automaton: Draw a card.

{B}, Sacrifice a creature: Target player discards a card. Activate only as a sorcery.

When Novice Occultist dies, you draw a card and you lose 1 life.

{2}{B}: Return Persistent Specimen from your graveyard to the battlefield tapped.

{B}, Sacrifice a creature: Target creature gets -1/-1 until end of turn.

When Serrated Scorpion dies, it deals 2 damage to each opponent and you gain 2 life.

When Skullport Merchant enters the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") {1}{B}, Sacrifice another creature or a Treasure: Draw a card.

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

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

Flash Enchant creature At the beginning of your upkeep, you lose 1 life. {0}: Regenerate enchanted creature.

Attacking Pests you control get +1/+0 and have menace. Whenever a nontoken creature you control dies, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

Enchant creature Enchanted creature has deathtouch and indestructible. Morph—Sacrifice another creature. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) As Gift of Doom is turned face up, you may attach it to a creature.

{1}{B}, Sacrifice a creature: You gain 1 life and draw a card.

Add {B}{B}{B}.

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

As an additional cost to cast this spell, sacrifice a creature. Destroy target creature. Its controller loses life equal to the number of creatures that died this turn.

For each creature, its controller sacrifices it unless they pay X life.