Flying

When Abhorrent Overlord enters the battlefield, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

At the beginning of your upkeep, sacrifice a creature.

Flying

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

Flying

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

Unearth {3}{B}{B} ({3}{B}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

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

At the beginning of your upkeep, if you have 5 or less life, you may transform Arguel's Blood Fast.

(Transforms from Arguel's Blood Fast.)

{T}: Add {B}.

{T}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.

Exile two target nonartifact creatures. Ashes to Ashes deals 5 damage to you.

Flash

Enchant creature

At the beginning of your upkeep, you lose 1 life.

{0}: Regenerate enchanted creature.

At the beginning of your upkeep, you may sacrifice Blood Speaker. If you do, search your library for a Demon card, reveal that card, put it into your hand, then shuffle.

Whenever a Demon enters the battlefield under your control, return Blood Speaker from your graveyard to your hand.

Flying

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

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

Whenever you cast a creature spell, each opponent loses 1 life and you gain 1 life.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

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

{T}: Add {C}.

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

As Caged Sun enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+1.

Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

Add {B}{B}{B}.

As an additional cost to cast this spell, sacrifice a creature.

Flying, trample

Whenever a player casts a black spell, you may gain 1 life.

Flying, trample

When Demonlord Belzenlok enters the battlefield, 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.

Flying

At the beginning of each combat, any opponent may sacrifice a creature. If a player does, tap Desecration Demon and put a +1/+1 counter on it.

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.

When Duskfang Mentor enters the battlefield, put a lifelink counter on target non-Human creature you control.

{1}{B}, {T}: Put a +1/+1 counter on each creature you control with lifelink.

Flying

{B}, Sacrifice another creature: Regenerate Eater of Hope.

{2}{B}, Sacrifice two other creatures: Destroy target creature.

Equipped creature gets +1/+0.

When equipped creature deals combat damage to a player, unattach Elbrus, the Binding Blade, then transform it.

Equip {1}

Flying, intimidate, trample (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a player loses the game, put thirteen +1/+1 counters on Withengar Unbound.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

Each opponent loses X life. You gain life equal to the life lost this way.

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

Whenever you pay life, put that many blood counters on Font of Agonies.

{1}{B}, Remove four blood counters from Font of Agonies: Destroy target creature.

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.)

Hall of the Bandit Lord enters the battlefield tapped.

{T}, Pay 3 life: Add {C}. If that mana is spent on a creature spell, it gains haste.

Flying

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

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)

Equipped creature gets +1/+1 for each Swamp you control.

Equip {B/P}{B/P} ({B/P} can be paid with either {B} or 2 life.)

When Liliana's Contract enters the battlefield, 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.

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

Choose target creature. You lose 2 life. Until end of turn, that creature gains "When this creature dies, return it to the battlefield tapped under its owner's control."

Malakir Mire enters the battlefield tapped.

{T}: Add {B}.

Whenever you gain life, each opponent loses 1 life.

Enchant creature

You control enchanted creature.

At the beginning of the end step, if you control no Demons, sacrifice Mark of the Oni.

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.

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.)

Choose a creature type. Target player draws X cards and loses X life, where X is the number of creatures they control of the chosen type.

Flying

{B}: Pestilence Demon deals 1 damage to each creature and each player.

Choose one --

• Sacrifice any number of creatures. You gain 3 life for each sacrificed creature.

• Pay X life, then look at the top X cards of your library. Put one of those cards into your hand and exile the rest.

Entwine {B} (Choose both if you pay the entwine cost.)

When Poet's Quill enters the battlefield, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

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

Equip {1}{B}

Choose one --

• You draw five cards and you lose 5 life.

• Create an X/X black Demon creature token with flying, where X is the number of cards in your hand.

Entwine {4} (Choose both if you pay the entwine cost.)

Flying

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

Destroy two target nonblack creatures. You lose 5 life.

Flying

When Reiver Demon enters the battlefield, if you cast it from your hand, destroy all nonartifact, nonblack creatures. They can't be regenerated.

You have no maximum hand size.

{T}: Add {C}.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II -- Create two 0/1 black Cleric creature tokens.

III -- Create a 6/6 black Demon creature token with flying, trample, and "At the beginning of your upkeep, sacrifice another creature. If you can't, this creature deals 6 damage to you."

Target creature gets +1/+0 and gains lifelink and indestructible until end of turn. (Damage dealt by that creature also causes its controller to gain that much life, and it can't be destroyed by damage or effects that say "destroy.")

When Shadowgrange Archfiend enters the battlefield, each opponent sacrifices a creature with the greatest power among creatures they control. You gain life equal to the greatest power among creatures sacrificed this way.

Madness--{2}{B}, Pay 8 life. (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Target player draws two cards and loses 2 life.

When Skemfar Shadowsage enters the battlefield, choose one --

• Each opponent loses X life, where X is the greatest number of creatures you control that have a creature type in common.

• You gain X life, where X is the greatest number of creatures you control that have a creature type in common.

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

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

{6}, {T}: Two target players exchange life totals.

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.

{T}: Add {C}.

{4}, {T}: Create a 0/1 white Goat creature token.

{T}, Sacrifice X Goats: Add X mana of any one color. You gain X life.

Whenever you cast a black spell or a Swamp enters the battlefield under your control, you gain 1 life.

You draw X cards and you lose X life, where X is the mana value of a commander you own on the battlefield or in the command zone.

({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 {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Flying

Taborax, Hope's Demise has lifelink as long as it has five or more +1/+1 counters on it.

Whenever another nontoken creature you control dies, put a +1/+1 counter on Taborax. If that creature was a Cleric, you may draw a card. If you do, you lose 1 life.

{T}, Pay 3 life: Flip a coin. If you win the flip, you gain 6 life.

{1}, {T}, Discard a card: You gain 4 life.

{1}, {T}, Pay 1 life: Create a 0/1 white Goat creature token.

{1}, {T}, Sacrifice a creature: Return target artifact card from your graveyard to your hand.

{1}, {T}, Sacrifice an artifact: Draw a card.

Put a +1/+1 counter and a lifelink counter on target creature.

Enchant creature

When enchanted creature dies, return that card to the battlefield under your control with a +1/+1 counter on it.

Enchant creature

Whenever enchanted creature deals damage, you gain that much life.

Deathtouch

Boast -- {1}{B}: Target player searches their library for a card, then shuffles and puts that card on top. (Activate only if this creature attacked this turn and only once each turn.)

You have no maximum hand size.

At the beginning of your upkeep, you gain 1 life for each card in your hand.

Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.

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.)

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

{T}: Add {C}.

{5}, {T}, Pay 1 life: Create a 1/1 white and black Human Cleric creature token.

{5}, {T}, Sacrifice five creatures: Transform Westvale Abbey, then untap it.

Flying, lifelink, indestructible, haste

({T}: Add {B}.)

Witch's Cottage enters the battlefield tapped unless you control three or more other Swamps.

When Witch's Cottage enters the battlefield untapped, you may put target creature card from your graveyard on top of your library.