Return from your graveyard to the battlefield any number of target creature cards that each have a different mana value X or less.

As Agadeem, the Undercrypt enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.

{T}: Add {B}.

Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

{T}: Add {C}.

{1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.

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

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

Target player draws two cards and loses 2 life.

Choose one --

• Destroy all creatures.

• Destroy all planeswalkers.

Then return a creature or planeswalker card with mana value X or less from your graveyard to the battlefield, where X is the amount of {S} spent to cast this spell. ({S} is mana from a snow source.)

{2}, {T}: Add {B} for each Swamp you control.

{T}: Add {C}.

{3}, {T}: Add {B} for each basic Swamp you control.

All Nightmares get +1/+1.

{B}{B}{B}, Pay 3 life: Put target creature card from a graveyard onto the battlefield under your control. That creature is black and is a Nightmare in addition to its other creature types.

When Chainer, Dementia Master leaves the battlefield, exile all Nightmares.

Charcoal Diamond enters the battlefield tapped.

{T}: Add {B}.

Coldsteel Heart enters the battlefield tapped.

As Coldsteel Heart enters the battlefield, choose a color.

{T}: Add one mana of the chosen color.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Whenever you tap a Swamp for mana, add an additional {B}.

{3}, {T}, Sacrifice Crystal Chimes: Return all enchantment cards from your graveyard to your hand.

All nonsnow creatures get -X/-X until end of turn, where X is the number of snow permanents you control.

Target creature gets -4/-4 until end of turn.

Cycling {1}{B}{B} ({1}{B}{B}, Discard this card: Draw a card.)

When you cycle Death Pulse, you may have target creature get -1/-1 until end of turn.

{T}: Add {C}.

{T}: Desert deals 1 damage to target attacking creature. Activate only during the end of combat step.

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

All creatures gain fear until end of turn. (They can't be blocked except by artifact creatures and/or black creatures.)

Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)

When you cycle Dirge of Dread, you may have target creature gain fear until end of turn.

If a nontoken creature an opponent controls would die, exile that card with an ice counter on it instead.

You may cast spells from among cards in exile your opponents own with ice counters on them, and you may spend mana from snow sources as though it were mana of any color to cast those spells.

Whenever a Swamp enters the battlefield under your control, choose one --

• You draw a card and you lose 1 life.

• Dread Presence deals 2 damage to any target and you gain 2 life.

Creatures you control get +1/+1 and have flying and indestructible.

At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice Eldrazi Monument.

Each creature has "When this creature dies, choose target opponent. That player puts this card from its owner's graveyard onto the battlefield under their control at the beginning of the next end step."

Indestructible

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

Whenever another creature you control dies, you may pay 2 life. If you do, draw a card.

{1}{B}, Sacrifice another creature: Target creature gets -2/-1 until end of turn.

Indestructible

As long as your devotion to black is less than five, Erebos isn't a creature. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Your opponents can't gain life.

{1}{B}, Pay 2 life: Draw a card.

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Imprint -- When Extraplanar Lens enters the battlefield, you may exile target land you control.

Whenever a land with the same name as the exiled card is tapped for mana, its controller adds one mana of any type that land produced.

{T}: Add {C}.

{S}{S}{S}: Faceless Haven becomes a 4/3 creature with vigilance and all creature types until end of turn. It's still a land. ({S} can be paid with one mana from a snow source.)

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

{T}: Add one mana of any color that a land an opponent controls could produce.

{T}: Add {C}.

{2}, {T}, Sacrifice Field of Ruin: Destroy target nonbasic land an opponent controls. Each player searches their library for a basic land card, puts it onto the battlefield, then shuffles.

When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Deathtouch

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

{X}{B/P}: Remove up to X counters from target permanent. For each counter removed this way, Hex Parasite gets +1/+0 until end of turn. ({B/P} can be paid with either {B} or 2 life.)

Flying

Whenever a creature becomes the target of a spell or ability, destroy that creature.

Exile Ill-Gotten Gains. Each player discards their hand, then returns up to three cards from their graveyard to their hand.

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

Flying

When Kokusho, the Evening Star dies, each opponent loses 5 life. You gain life equal to the life lost this way.

{T}: Add {C}.

{T}: Target nonland permanent becomes an artifact in addition to its other types until end of turn.

When Massacre Wurm enters the battlefield, creatures your opponents control get -2/-2 until end of turn.

Whenever a creature an opponent controls dies, that player loses 2 life.

{T}: Add {C}.

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

When Mogis's Marauder enters the battlefield, up to X target creatures each gain intimidate and haste until end of turn, where X is your devotion to black. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it. Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Whenever one or more other creatures die, draw a card. This ability triggers only once each turn.

You may cast Necromancy as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

When Necromancy enters the battlefield, if it's on the battlefield, it becomes an Aura with "enchant creature put onto the battlefield with Necromancy." Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it. When Necromancy leaves the battlefield, that creature's controller sacrifices it.

You draw two cards and you lose 2 life.

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}

{T}: Add {C}.

{2}, {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.)

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.)

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token.

Rats you control have deathtouch.

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}."

Sacrifice a creature: Add one mana of any color.

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

At the beginning of your upkeep, if you control ten or more Treasures, you win the game.

Flying

When Rune-Scarred Demon enters the battlefield, search your library for a card, put it into your hand, then shuffle.

{T}: Add {C}.

{2}, {T}, Sacrifice a Desert: Exile all graveyards.

Exile target permanent.

{T}: Add {C}.

{1}{S}, {T}: Look at the top card of your library. If that card is snow, you may reveal it and put it into your hand. ({S} can be paid with one mana from a snow source.)

Whenever a creature dies, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{4}{B}: Each opponent loses 2 life and you gain 2 life. Activate only if there are four or more creature cards in your graveyard.

Equipped creature gets +1/+1 and has trample and lifelink.

{1}: Permanents your opponents control lose hexproof and indestructible until end of turn.

Equip {2}

{T}: Add {B}.

{B}, {T}: Target legendary creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Target player draws two cards and loses 2 life.

({T}: Add {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}.)

({T}: Add {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}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

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

{B}{B}, Pay 2 life, Sacrifice a Swamp: Return target creature card from your graveyard to the battlefield.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent.

{1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

Target creature gets +1/+0 and gains infect until end of turn. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{T}: Add {B}.

Channel -- {3}{B}, Discard Takenuma, Abandoned Mire: Mill three cards, then return a creature or planeswalker card from your graveyard to your hand. This ability costs {1} less to activate for each legendary creature you control.

Deathtouch

{B}, Reveal Tetzimoc, Primal Death from your hand: Put a prey counter on target creature. Activate only during your turn.

When Tetzimoc enters the battlefield, destroy each creature your opponents control with a prey counter on it.

+2: Create two 0/1 black Thrull creature tokens.

+1: You may sacrifice another creature or planeswalker. If you do, draw two cards, then draw another card if the sacrificed permanent was a commander.

-10: Gain control of all commanders. Put all commanders from the command zone onto the battlefield under your control.

Tevesh Szat, Doom of Fools can be your commander.

Partner

One or more target creatures become black until end of turn.

+2: Ugin, the Spirit Dragon deals 3 damage to any target.

-X: Exile each permanent with mana value X or less that's one or more colors.

-10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

{T}: Add {B}.

{T}: Target creature loses first strike or swampwalk until end of turn.

Each land is a Swamp in addition to its other land types.

Flying

{B}, Pay 2 life: Target creature gets -1/-1 until end of turn.

Whenever you lose life, draw that many cards. (Damage causes loss of life.)

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}: Add {C}.

{3}, {T}, Pay life equal to the number of colors in your commanders' color identity: Draw a card.

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Withering Wisps.

{B}: Withering Wisps deals 1 damage to each creature and each player. Activate no more times each turn than the number of snow Swamps you control.

Choose three. You may choose the same mode more than once.

• Target player draws a card and loses 1 life.

• Target creature gets -2/-2 until end of turn.

• Return target creature card from your graveyard to your hand.

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.