Flying, trample

You can't win the game and your opponents can't lose the game.

Reveal the top six cards of your library. An opponent exiles a nonland card from among them, then you put the rest into your hand. That opponent may cast the exiled card without paying its mana cost.

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

Flying

At the beginning of each opponent's end step, that player chooses up to two creatures they control, then sacrifices the rest.

Destroy target artifact, creature, or planeswalker.

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

Flying

At the beginning of your upkeep, target player draws a card and loses 1 life.

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

If it's neither day nor night, it becomes day as Brimstone Vandal enters the battlefield.

Whenever day becomes night or night becomes day, Brimstone Vandal deals 1 damage to each opponent.

Whenever a creature dies, that creature's controller sacrifices a land.

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.

Gain control of target spell that targets only a single permanent or player. Copy it, then reselect the targets at random for the spell and the copy. The new targets can't be you or a permanent you control.

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

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it.)

Shuffle your library, then reveal cards from the top of it until you reveal a nonland card. Exile that card and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost.

Each nonland card in your hand without foretell has foretell. Its foretell cost is equal to its mana cost reduced by {2}. (During your turn, you may pay {2} and exile it from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever you foretell a card, Dream Devourer gets +2/+0 until end of turn.

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

When Eye of Doom enters the battlefield, each player chooses a nonland permanent and puts a doom counter on it.

{2}, {T}, Sacrifice Eye of Doom: Destroy each permanent with a doom counter on it.

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

{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.

At the beginning of your end step, if you control a creature with power 4 or greater, exile the top card of your library. You may play that card until you exile another card with Furious Rise.

When Gibbering Fiend enters the battlefield, it deals 1 damage to each opponent.

Delirium -- At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, Gibbering Fiend deals 1 damage to that player.

Suspend 3--{R}{R}

Shuffle all permanents you own into your library, then reveal that many cards from the top of your library. Put all non-Aura permanent cards revealed this way onto the battlefield, then do the same for Aura cards, then put the rest on the bottom of your library in a random order.

When a nonblack creature enters the battlefield, sacrifice Grave Peril. If you do, destroy that creature.

Deathtouch

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

{B}, Sacrifice a creature: Scry 2.

{2}{R}, {T}: Exile the top card of your library. You may play that card this turn. When you exile a nonland card this way, Hidetsugu, Devouring Chaos deals damage equal to the exiled card's mana value to any target.

Whenever another creature dies, you may have Hissing Iguanar deal 1 damage to target player or planeswalker.

{T}: Add {C}.

{T}, Pay 1 life: Add {B}.

{2}{B}{B}, {T}, Sacrifice a Desert: Put two -1/-1 counters on target creature an opponent controls. Activate only as a sorcery.

When Immersturm Raider enters the battlefield, 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.

Flying

At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life.

When Kardur, Doomscourge enters the battlefield, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able.

Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life.

Whenever a permanent other than Last Laugh is put into a graveyard from the battlefield, Last Laugh deals 1 damage to each creature and each player.

When no creatures are on the battlefield, sacrifice Last Laugh.

Choose a creature at random, then destroy the rest.

Lavaclaw Reaches enters the battlefield tapped.

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

{1}{B}{R}: Until end of turn, Lavaclaw Reaches becomes a 2/2 black and red Elemental creature with "{X}: This creature gets +X/+0 until end of turn." It's still a land.

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.

Whenever a player sacrifices a permanent, Mayhem Devil deals 1 damage to any target.

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

Whenever Mayhem Patrol attacks, target creature gets +1/+0 until end of turn.

Blitz {1}{R} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

{T}: Add {C}.

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

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

({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}.)

({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.

Flying

Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and it's a Nightmare in addition to its other types.

Whenever a creature enters, that creature's controller may have it deal damage equal to its power to any target of their choice.

At the beginning of your upkeep, flip a coin. If you lose the flip, sacrifice Planar Chaos.

Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell.

Whenever a player casts a spell from their hand, that player exiles it, then exiles cards from the top of their library until they exile a card that shares a card type with it. That player may cast that card without paying its mana cost. Then they put all cards exiled with Possibility Storm on the bottom of their library in a random order.

{T}: Add {C}.

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

{T}: Each player exiles the top card of their library face down.

{7}, {T}, Sacrifice Pyxis of Pandemonium: Each player turns face up all cards they own exiled with Pyxis of Pandemonium, then puts all permanent cards among them onto the battlefield.

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}.

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

{B}{R}, {T}, Sacrifice Rakdos Cluestone: Draw a card.

Rakdos Guildgate enters the battlefield tapped.

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

{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.

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

{B/R}{B/R}{B/R}{B/R}, {T}, Sacrifice Rakdos Locket: Draw two cards.

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

Flying, trample

When Rakdos, the Showstopper enters the battlefield, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.

Spectacle {2}{B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

When Rix Maadi Reveler enters the battlefield, discard a card, then draw a card. If Rix Maadi Reveler's spectacle cost was paid, instead discard your hand, then draw three cards.

{T}: Add {C}.

{1}{B}{R}, {T}: Each player discards a card. Activate only as a sorcery.

When Share the Spoils enters the battlefield or an opponent loses the game, exile the top card of each player's library.

During each player's turn, that player may play a land or cast a spell from among cards exiled with Share the Spoils, and they may spend mana as though it were mana of any color to cast that spell. When they do, exile the top card of their library.

Menace

At the beginning of your upkeep, reveal the top card of your library. Any opponent may have you put that card into your graveyard. If a player does, Sin Prodder deals damage to that player equal to that card's mana value. Otherwise, put that card into your hand.

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

Flying

Whenever a player casts a nonblack spell, that player loses 1 life.

When Soulcage Fiend dies, each player loses 3 life.

Spectacle {1}{B}{B} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

Flying, trample

At the beginning of your upkeep, Spawn of Mayhem deals 1 damage to each player. Then if you have 10 or less life, put a +1/+1 counter on Spawn of Mayhem.

During your turn, Spiteful Prankster has first strike.

Whenever another creature dies, Spiteful Prankster deals 1 damage to target player or planeswalker.

({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}.

{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.

At the beginning of your upkeep, exile the top card of your library.

During your turn, if an opponent lost life this turn, you may play lands and cast spells from among cards exiled with Theater of Horrors.

{3}{R}: Theater of Horrors deals 1 damage to target opponent or planeswalker.

Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.

Your opponents can't gain life.

-2: Create a 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target."

Enchant land

Enchanted land has "{T}, Pay 1 life: Draw a card."

{T}: Add {C}.

{7}, {T}, Sacrifice Unstable Obelisk: Destroy target permanent.

Haste

Morbid -- {T}: Vengeful Devil deals 1 damage to any target. Activate only if a creature died this turn.

Each player shuffles all permanents they own into their library, then reveals that many cards from the top of their library. Each player puts all artifact, creature, and land cards revealed this way onto the battlefield, then does the same for enchantment cards, then puts all cards revealed this way that weren't put onto the battlefield on the bottom of their library.

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

Each player secretly chooses a number 0 or greater, then all players reveal those numbers simultaneously and determine the highest and lowest numbers revealed this way. Wheel of Misfortune deals damage equal to the highest number to each player who chose that number. Each player who didn't choose the lowest number discards their hand, then draws seven cards.

Starting with you, each player separates all permanents they control into three piles. Then each player chooses one of their piles at random and sacrifices those permanents. (Piles can be empty.)

When Wildfire Devils enters the battlefield and at the beginning of your upkeep, choose a player at random. That player exiles an instant or sorcery card from their graveyard. Copy that card. You may cast the copy without paying its mana cost.

Alliance -- Whenever another creature enters the battlefield under your control, Witty Roastmaster deals 1 damage to each opponent.

Whenever an opponent draws their first card each turn, if it's not their turn, you create a 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target."

Whenever one or more Devils you control attack one or more players, you and those players each draw a card, then discard a card at random.