Each spell you cast that's a Demon, Horror, or Nightmare costs {1} 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.

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

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

Add {B}{B}{B}.

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

Locus of Slaanesh — Demon spells you cast cost {2} less to cast. Other Demons you control have haste.

As this artifact enters, choose a creature type. Creature spells you cast of the chosen type cost {1} less to cast. At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

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

Blue spells and red spells you cast cost {1} less to cast. {1}{B}: Regenerate this creature.

As this artifact enters, choose a creature type. Creatures you control of the chosen type get +1/+1. {T}: Add one mana of any color.

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

You can't cast Rakdos unless an opponent lost life this turn. Flying, trample Creature spells you cast cost {1} less to cast for each 1 life your opponents have lost this turn.

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

Morbid — At the beginning of each end step, if a creature died this turn, put a soul counter on this artifact. {T}: Add X mana of any one color, where X is the number of soul counters on this artifact. Spend this mana only to cast instant, sorcery, Demon, and Spirit spells.

At the beginning of your upkeep, you may sacrifice this creature. If you do, search your library for a Demon card, reveal that card, put it into your hand, then shuffle. Whenever a Demon you control enters, return this card from your graveyard to your hand.

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.

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

Flying When this creature enters, search your library for a card, put it into your hand, then shuffle.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Whenever another nontoken creature dies, you may draw a card.

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

When this enchantment 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.

Flying, ward {3} Architect of Deception — When this creature enters, draw three cards.

Flying, trample At the beginning of your end step, target opponent may sacrifice two nonland, nontoken permanents of their choice. If they don't, you draw two cards.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Flying, trample When Orcus enters, choose one — • Each other creature gets -X/-X until end of turn. You lose X life. • Return up to X target creature cards with total mana value X or less from your graveyard to the battlefield. They gain haste until end of turn.

As this enchantment enters, choose a creature type. Whenever you cast a spell of the chosen type, copy that spell. (A copy of a permanent spell becomes a token.)

Kicker {5} (You may pay an additional {5} as you cast this spell.) Create a token that's a copy of target creature. If this spell was kicked, create five of those tokens instead.

Ward {2} As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. If a triggered ability of another creature you control of the chosen type triggers, it triggers an additional time.

You may have Sakashima enter as a copy of another creature you control, except it has Sakashima's other abilities. The "legend rule" doesn't apply to permanents you control. Partner (You can have two commanders if both have partner.)

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

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.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

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.

Counter target spell.

Destroy all creatures. They can't be regenerated.

When Lord Xander enters, target opponent discards half the cards in their hand, rounded down. Whenever Lord Xander attacks, defending player mills half their library, rounded down. When Lord Xander dies, target opponent sacrifices half the nonland permanents they control of their choice, rounded down.

Counter target noncreature spell.

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

Flying Morbid — At the beginning of each end step, if a creature died this turn, destroy target non-Demon creature.

Spree (Choose one or more additional costs.) + {1} — Target opponent sacrifices half the creatures they control of their choice, rounded up. + {2} — Target opponent discards half the cards in their hand, rounded up. + {2} — Target opponent loses half their life, rounded up.

Destroy target creature. It can't be regenerated.

{T}: Add {B}. {T}: Add {R}. Activate only if you control a Swamp or a Mountain.

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

This land enters tapped. {T}: Add {U}, {B}, or {R}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {U}{B}.

This land enters tapped unless you control a Swamp or a Mountain. {T}: Add {B} or {R}.

This land enters tapped unless you control an Island or a Swamp. {T}: Add {U} or {B}.

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

{T}: Add {U}. {T}: Add {B}. Activate only if you control an Island or a Swamp.

This land enters tapped unless you control two or more other lands. {T}: Add {B} or {R}.

({T}: Add {U}.)

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {U}{R}.

This land enters tapped unless you have two or more opponents. {T}: Add {B} or {R}.

This land enters tapped unless you have two or more opponents. {T}: Add {U} or {B}.

({T}: Add {R}.)

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {B}{R}.

You have no maximum hand size. {T}: Add {C}.

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature source of the chosen type.

{T}: Add {C}. {T}, Sacrifice this land: Search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle. Cycling {U}{B}{R} ({U}{B}{R}, Discard this card: Draw a card.)

This land enters tapped unless you control two or more other lands. {T}: Add {U} or {B}.

This land enters tapped unless you control two or more other lands. {T}: Add {U} or {R}.

This land enters tapped unless you control an Island or a Mountain. {T}: Add {U} or {R}.

({T}: Add {B}.)

As Three Tree City enters, choose a creature type. {T}: Add {C}. {2}, {T}: Choose a color. Add an amount of mana of that color equal to the number of creatures you control of the chosen type.

This land enters tapped unless you have two or more opponents. {T}: Add {U} or {R}.

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

When Kardur enters, 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.

Reverberating Summons — At the beginning of your end step, each opponent loses 2 life. Then for each opponent who has less life than you, create a 1/3 black Demon creature token named Plaguebearer of Nurgle.