Constellation -- Whenever Agent of Erebos or another enchantment enters the battlefield under your control, exile target player's graveyard.

Whenever a land enters the battlefield, Ankh of Mishra deals 2 damage to that land's controller.

Flying

Your opponents can't gain life.

At the beginning of each end step, each opponent loses life equal to the life that player lost this turn. (Damage causes loss of life.)

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

Blasphemous Act deals 13 damage to each creature.

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

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

Bojuka Bog enters tapped.

When Bojuka Bog enters, exile target player's graveyard.

{T}: Add {B}.

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

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

Canyon Slough enters the battlefield tapped.

Cycling {2} ({2}, Discard this card: Draw a card.)

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.

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

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

Sacrifice Commander's Sphere: Draw a card.

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}.

Destroy all creatures. They can't be regenerated.

Add {B}{B}{B}.

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

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

Flash

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

Menace, deathtouch

When Dire Fleet Ravager enters the battlefield, each player loses a third of their life, rounded up.

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.

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

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.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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

When Fleshbag Marauder enters, each player sacrifices a creature.

Each player loses half their life, then discards half the cards in their hand, then sacrifices half the creatures they control. Round up each time.

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

{T}: Add three mana of any one color.

Destroy target nonartifact creature.

Deathtouch

Whenever Grave Titan enters the battlefield or attacks, create two 2/2 black Zombie creature tokens.

{T}: Add {C}.

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

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.)

Players can't gain life.

At the beginning of each player's upkeep, that player loses half their life, rounded up.

{T}: Heartless Hidetsugu deals damage to each player equal to half that player's life total, rounded down.

Destroy target creature or planeswalker.

Whenever an opponent casts a spell, Kaervek the Merciless deals damage equal to that spell's mana value to any target.

Lifelink

If a nontoken creature an opponent controls would die, instead exile that card and create a 2/2 black Zombie creature token.

{2}{B}, Sacrifice another Vampire or Zombie: Put two +1/+1 counters on Kalitas, Traitor of Ghet.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

Malignus's power and toughness are each equal to half the highest life total among your opponents, rounded up.

Damage that would be dealt by Malignus can't be prevented.

Whenever a player taps a land for mana, Manabarbs deals 1 damage to that player.

Players can't draw cards.

At the beginning of each player's draw step, that player loses 3 life, searches their library for a card, puts it into their hand, then shuffles.

First strike, deathtouch

Master of Cruelties can only attack alone.

Whenever Master of Cruelties attacks a player and isn't blocked, that player's life total becomes 1. Master of Cruelties assigns no combat damage this combat.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a Human deals damage to you, destroy it.

Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Indestructible

As long as your devotion to black and red is less than seven, Mogis isn't a creature.

At the beginning of each opponent's upkeep, Mogis deals 2 damage to that player unless they sacrifice a creature.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

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.

Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)

At the beginning of your postcombat main phase, add {R} for each 1 life your opponents have lost this turn.

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

{B}: Nirkana Revenant gets +1/+1 until end of turn.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

At the beginning of your upkeep, you draw a card and you lose 1 life.

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

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

{B}{R}: Rakdos Keyrune becomes a 3/1 black and red Devil artifact creature with first strike until end of turn.

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

Scry 2, then draw two cards. You lose 2 life.

Each player discards their hand, then draws seven cards.

Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Whenever a creature is dealt damage, Repercussion deals that much damage to that creature's controller.

Flying

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

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

At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.

At the beginning of each opponent's upkeep, that player sacrifices a creature.

Target player draws two cards and loses 2 life.

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

Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.

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

+2: Sorin Markov deals 2 damage to any target and you gain 2 life.

-3: Target opponent's life total becomes 10.

-7: You control target player during that player's next turn.

Flying

As Sower of Discord enters the battlefield, choose two players.

Whenever damage is dealt to one of the chosen players, the other chosen player also loses that much life.

Whenever a player casts a spell, Spellshock deals 2 damage to that player.

Your opponents can't search libraries.

If an opponent would begin an extra turn, that player skips that turn instead.

At the beginning of each player's upkeep, Sulfuric Vortex deals 2 damage to that player.

If a player would gain life, that player gains no life instead.

Whenever you cast a spell from your hand, reveal the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost. Put the rest on the bottom of your library in a random order.

({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}.

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

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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

Repeat the following process X times. Each opponent loses 3 life unless that player sacrifices a nonland permanent or discards a card.

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

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

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Destroy target artifact you don't control.

Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Whenever you cast your first spell each turn, choose an opponent at random. Vial Smasher the Fierce deals damage equal to that spell's mana value to that player or a planeswalker that player controls.

Partner (You can have two commanders if both have partner.)

Partner with Gorm the Great (When this creature enters the battlefield, target player may put Gorm into their hand from their library, then shuffle.)

Deathtouch

Whenever Virtus the Veiled deals combat damage to a player, that player loses half their life, rounded up.

At the beginning of each end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)

Whenever a land enters the battlefield, Zo-Zu the Punisher deals 2 damage to that land's controller.