When Abyssal Gatekeeper dies, each player sacrifices a creature.

Flying

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

Spells your opponents cast that target Accursed Witch cost {1} less to cast.

When Accursed Witch dies, return it to the battlefield transformed under your control attached to target opponent.

Enchant player

Spells you cast that target enchanted player cost {1} less to cast.

At the beginning of enchanted player's upkeep, that player loses 1 life and you gain 1 life.

Akoum Refuge enters the battlefield tapped.

When Akoum Refuge enters the battlefield, you gain 1 life.

{T}: Add {B} or {R}.

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

Flying, deathtouch

When Baleful Strix enters, draw a card.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

Prowess

When Bedlam Reveler enters the battlefield, discard your hand, then draw three cards.

Deathtouch

When Bitterheart Witch dies, you may search your library for a Curse card, put it onto the battlefield attached to target player, then shuffle.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

When Blistergrub dies, each opponent loses 2 life.

Bloodfell Caves enters the battlefield tapped.

When Bloodfell Caves enters the battlefield, you gain 1 life.

{T}: Add {B} or {R}.

Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.

When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)

Flying

Threshold -- As long as seven or more cards are in your graveyard, Childhood Horror gets +2/+2 and can't block.

As Choked Estuary enters the battlefield, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters the battlefield tapped.

{T}: Add {U} or {B}.

{1}, Sacrifice a permanent: You gain 1 life.

Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards.

Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Enchant player

At the beginning of enchanted player's upkeep, that player sacrifices a creature or planeswalker. If the player can't, they lose 5 life.

Crumbling Necropolis enters the battlefield tapped.

{T}: Add {U}, {B}, or {R}.

Enchant artifact

At the beginning of the upkeep of enchanted artifact's controller, Curse Artifact deals 2 damage to that player unless they sacrifice that artifact.

Enchant player

If a source would deal damage to enchanted player, it deals double that damage to that player instead.

Enchant player

Creatures enchanted player controls get -1/-1.

Enchant player

Whenever enchanted player draws a card, they lose 2 life and you gain 2 life.

Madness {3}{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.)

Enchant player

At the beginning of your upkeep, you may search your library for a Curse card that doesn't have the same name as a Curse attached to enchanted player, put it onto the battlefield attached to that player, then shuffle.

Enchant player

Whenever enchanted player is attacked, create a Gold token. Each opponent attacking that player does the same. (A Gold token is an artifact with "Sacrifice this artifact: Add one mana of any color.")

Enchant player

Whenever a creature deals combat damage to enchanted player, put a +1/+1 counter on that creature.

Enchant player

At the beginning of enchanted player's upkeep, Curse of Thirst deals damage to that player equal to the number of Curses attached to them.

Enchant player

Whenever enchanted player casts a spell, put a spite counter on Curse of Vengeance.

When enchanted player loses the game, you gain X life and draw X cards, where X is the number of spite counters on Curse of Vengeance.

Enchant player

Whenever enchanted player is attacked, you draw a card. Each opponent attacking that player does the same.

As Curse of Wizardry enters the battlefield, choose a color.

Whenever a player casts a spell of the chosen color, that player loses 1 life.

Enchant player

At the beginning of enchanted player's upkeep, that player mills two cards.

Target player sacrifices half the permanents they control, rounded down.

Suspend 2--{2}{B}{B} (Rather than cast this card from your hand, you may pay {2}{B}{B} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

At the beginning of each player's upkeep, if Curse of the Cabal is suspended, that player may sacrifice a permanent. If the player does, put two time counters on Curse of the Cabal.

Enchant player

Creatures enchanted player controls attack each combat if able.

Enchant player

At the beginning of enchanted player's upkeep, Curse of the Pierced Heart deals 1 damage to that player or a planeswalker that player controls.

{T}: Add {R}.

As Cursed Mirror enters the battlefield, you may have it become a copy of any creature on the battlefield until end of turn, except it has haste.

Dimir Aqueduct enters the battlefield tapped.

When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{B}.

Skulk (This creature can't be blocked by creatures with greater power.)

At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.

As Frostboil Snarl enters the battlefield, you may reveal an Island or Mountain card from your hand. If you don't, Frostboil Snarl enters the battlefield tapped.

{T}: Add {U} or {R}.

Menace

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Whenever Graven Abomination attacks, exile target card from defending player's graveyard.

Whenever a creature you control becomes blocked, you may return it to its owner's hand.

Whenever one or more creatures you control deal combat damage to a player, draw a card.

{2}, Sacrifice a nontoken permanent: Draw a card.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Boilerworks enters tapped.

When Izzet Boilerworks enters, return a land you control to its owner's hand.

{T}: Add {U}{R}.

{2}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy.

{3}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

{4}, {T}: Copy target permanent spell you control. (The copy becomes a token.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Enchant creature

Whenever enchanted creature attacks or blocks, its controller loses 3 life.

{1}{R}: Enchanted creature attacks this turn if able.

Whenever a creature deals damage to you, destroy it.

Enchant player

At the beginning of enchanted player's first upkeep each turn, that player gets an additional upkeep step after this step.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Rakdos Carnarium enters the battlefield tapped.

When Rakdos Carnarium enters the battlefield, return a land you control to its owner's hand.

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

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

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

{2}, {T}: Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.")

Submerged Boneyard enters the battlefield tapped.

{T}: Add {U} or {B}.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Swiftwater Cliffs enters tapped.

When Swiftwater Cliffs enters, you gain 1 life.

{T}: Add {U} or {R}.

Temple of Deceit enters the battlefield tapped.

When Temple of Deceit enters the battlefield, scry 1.

{T}: Add {U} or {B}.

Defender

Thing in the Ice enters the battlefield with four ice counters on it.

Whenever you cast an instant or sorcery spell, remove an ice counter from Thing in the Ice. Then if it has no ice counters on it, transform it.

When this creature transforms into Awoken Horror, return all non-Horror creatures to their owners' hands.

Enchant player

At the beginning of enchanted player's upkeep, that player loses 3 life unless they sacrifice a nonland permanent or discard a card.

Enchant player

Whenever a creature enters the battlefield under enchanted player's control, that player loses 1 life and you gain 1 life.