Each spell you cast that's a Demon, Horror, or Nightmare costs less to cast.

Whenever you cast a spell, if the amount of mana spent to cast it was less than its mana value, target opponent loses life equal to the difference.

Flying, trample

At the beginning of your upkeep, sacrifice a Human. If you can't, tap Archdemon of Greed and it deals 9 damage to you.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

When Archfiend's Vessel enters, if it entered from your graveyard or you cast it from your graveyard, exile it. If you do, create a 5/5 black Demon creature token with flying.

Flying, first strike, lifelink, protection from Demons and from Dragons

Menace

Equipped creature has base power and toughness 5/5, has menace, and is a black Demon in addition to its other colors and types.

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

, Pay 2 life, Discard a card, Sacrifice a creature: Create a 5/5 black Demon creature token with flying. Activate only as a sorcery.

, : Create a 1/1 black and red Demon creature token named Minor Demon.

At the beginning of your end step, if you descended this turn, put a +1/+1 counter on target creature you control. (You descended if a permanent card was put into your graveyard from anywhere.)

, Sacrifice Canonized in Blood: Create a 4/3 white and black Vampire Demon creature token with flying.

Whenever you attack, target attacking Vampire that isn't a Demon becomes a Demon in addition to its other types. It gains "When this creature dies, draw a card and create a tapped 4/3 white and black Vampire Demon creature token with flying."

Constellation — Whenever Daxos's Torment or another enchantment you control enters, Daxos's Torment becomes a 5/5 Demon creature with flying and haste in addition to its other types until end of turn.

Flying

When Demon of Dark Schemes enters, all other creatures get -2/-2 until end of turn.

Whenever another creature dies, you get (an energy counter).

, Pay : Put target creature card from a graveyard onto the battlefield under your control tapped.

Flying, trample

Whenever Demon of Loathing deals combat damage to a player, that player sacrifices a creature of their choice.

Demonfire deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Hellbent — If you have no cards in hand, this spell can't be countered and the damage can't be prevented.

Search your library for a Demon card, reveal it, put it into your hand, then shuffle.

Delirium — If there are four or more card types among cards in your graveyard, instead search your library for any card, put it into your hand, then shuffle.

Enchant creature

Enchanted creature gets +3/+1, has flying, and is a Demon in addition to its other types.

You may cast Demonic Embrace from your graveyard by paying 3 life and discarding a card in addition to paying its other costs.

When Demonic Lore enters, draw three cards.

At the beginning of your end step, you lose 2 life for each card in your hand.

Enchant creature

Enchanted creature gets +1/+1 and has menace and trample.

When Demonic Ruckus is put into a graveyard from the battlefield, draw a card.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Flying, trample

When Demonlord Belzenlok enters, exile cards from the top of your library until you exile a nonland card, then put that card into your hand. If the card's mana value is 4 or greater, repeat this process. Demonlord Belzenlok deals 1 damage to you for each card put into your hand this way.

When this creature transforms into Demon-Possessed Witch, you may destroy target creature.

Flying

Hellbent — Demon's Jester gets +2/+1 as long as you have no cards in hand.

When Dread Cacodemon enters, if you cast it from your hand, destroy all creatures your opponents control, then tap all other creatures you control.

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)

Destroy target nonland permanent. Its controller creates two Treasure tokens.

As an additional cost to cast this spell, you may sacrifice a non-Demon creature.

Flying

When Graven Archfiend enters the battlefield, if its additional cost was paid, conjure a card named Demonic Pact onto the battlefield.

Flash

Rites of Banishment — When Grey Knight Paragon enters, destroy target attacking creature. If that creature is a Demon, exile it instead.

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)

Return target card from your graveyard to your hand. You gain life equal to that card's mana value. Exile Healing Technique.

Locus of Slaanesh — Demon spells you cast cost less to cast.

Other Demons you control have haste.

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

Mill five cards, then return a creature card from your graveyard to the battlefield.

Enchant creature

Enchanted creature gets +2/+2, has flying, and is a Demon in addition to its other types.

When Inner Demon enters, all non-Demon creatures get -2/-2 until end of turn.

Flying

Whenever Kaalia of the Vast attacks an opponent, you may put an Angel, Demon, or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent.

When Liliana's Contract enters, you draw four cards and you lose 4 life.

At the beginning of your upkeep, if you control four or more Demons with different names, you win the game.

When March of the Canonized enters, create X 1/1 white Vampire creature tokens with lifelink.

At the beginning of your upkeep, if your devotion to white and black is seven or greater, create a 4/3 white and black Vampire Demon creature token with flying.

, Sacrifice another creature: Add . Spend this mana only to cast Vampire, Cleric, and/or Demon spells.

Flying, trample

When Mindwrack Demon enters, mill four cards.

Delirium — At the beginning of your upkeep, you lose 4 life unless there are four or more card types among cards in your graveyard.

Enchant creature an opponent controls

When enchanted creature dies, return Nurgle's Rot to its owner's hand and you create a 1/3 black Demon creature token named Plaguebearer of Nurgle.

Casualty X. The copy isn't legendary and has starting loyalty X. (As you cast this spell, you may sacrifice a creature with power X. When you do, copy this spell. The copy becomes a token.)

+1: Each opponent loses 2 life unless they discard a card. If you control a Demon or Devil, you gain 2 life.

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

−7: Target player draws seven cards and loses 7 life.

Trample

Whenever another creature dies, put a +1/+1 counter on Orca, Siege Demon.

When Orca dies, it deals damage equal to its power divided as you choose among any number of targets.

Coruscating Flames — Whenever you cast an instant or sorcery spell, Pink Horror deals 2 damage to any target.

Split — When Pink Horror dies, create two 2/2 blue and red Demon Horror creature tokens named Blue Horror with "Whenever you cast an instant or sorcery spell, this creature deals 1 damage to any target."

Destroy target non-Angel, non-Demon, non-Devil, non-Dragon creature.

At the beginning of your end step, you may sacrifice a non-Demon creature. If you do, populate. (Create a token that's a copy of a creature token you control.)

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

, , 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.

Flying, trample

Whenever Rakdos the Defiler attacks, sacrifice half the non-Demon permanents you control, rounded up.

Whenever Rakdos deals combat damage to a player, that player sacrifices half the non-Demon permanents they control of their choice, rounded up.

Flying

Other Demons, Devils, Imps, and Tieflings you control get +1/+1 and have lifelink.

At the beginning of each end step, if a creature card was put into your graveyard from anywhere this turn, create a 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target."

When Raving Oni-Slave enters or leaves the battlefield, you lose 3 life if you don't control a Demon.

Each player sacrifices a creature of their choice. Create an X/X black Demon creature token with flying, where X is the total power of the creatures sacrificed this way.

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)

Create a token that's a copy of target permanent you control.

When you unlock this door, create a 6/6 black Demon creature token with flying.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Morbid — At the beginning of each end step, if a creature died this turn, put a soul counter on Séance Board.

: Add X mana of any one color, where X is the number of soul counters on Séance Board. Spend this mana only to cast instant, sorcery, Demon, and Spirit spells.

Flying

When Shadowborn Demon enters, destroy target non-Demon creature.

At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature.

Morbid — , Tap two untapped creatures you control: Create a 5/5 black Demon creature token with flying. Activate only if a creature died this turn.

Pack tactics — Whenever Targ Nar, Demon-Fang Gnoll attacks, if you attacked with creatures with total power 6 or greater this combat, attacking creatures get +1/+0 until end of turn.

: Double Targ Nar's power and toughness until end of turn.