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.
6 /
6
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{3}{B}{B}
Archfiend of Depravity
Creature - Demon
Flying
At the beginning of each opponent's end step, that player chooses up to two creatures they control, then sacrifices the rest.
5 /
4
{6}{B}{B}
Archfiend of Despair
Creature - Demon
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.)
6 /
6
{1}{W}{B}
Athreos, God of Passage
Legendary Enchantment Creature - God
Indestructible
As long as your devotion to white and black is less than seven, Athreos isn't a creature.
Whenever another creature you own dies, return it to your hand unless target opponent pays 3 life.
5 /
4
{B}{B}{R}
Bedevil
Instant
Destroy target artifact, creature, or planeswalker.
--
Blood Crypt
Land - Swamp Mountain
({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.
{3}{B}{B}
Bloodgift Demon
Creature - Demon
Flying
At the beginning of your upkeep, target player draws a card and loses 1 life.
5 /
4
{3}{B}{B}{B}
Bolas's Citadel
Legendary Artifact
You may look at the top card of your library any time.
You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.
{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.
{R}{W}
Boros Charm
Instant
Choose one --
• Boros Charm deals 4 damage to target player or planeswalker.
• Permanents you control gain indestructible until end of turn.
• Target creature gains double strike until end of turn.
--
Boros Guildgate
Land - Gate
Boros Guildgate enters the battlefield tapped.
{T}: Add {R} or {W}.
--
Cabal Coffers
Land
{2}, {T}: Add {B} for each Swamp you control.
{3}
Chromatic Lantern
Artifact
Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.
--
Command Beacon
Land
{T}: Add {C}.
{T}, Sacrifice Command Beacon: Put your commander into your hand from the command zone.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{3}
Commander's Sphere
Artifact
{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
{R}{W}{B}
Crackling Doom
Instant
Crackling Doom deals 2 damage to each opponent. Each opponent sacrifices a creature with the greatest power among creatures that player controls.
{3}{B}
Crypt Ghast
Creature - Spirit
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}.
2 /
2
{3}
Darksteel Plate
Artifact - Equipment
Indestructible
Equipped creature has indestructible.
Equip {2}
{2}{B}{B}
Demon of Catastrophes
Creature - Demon
As an additional cost to cast this spell, sacrifice a creature.
Flying, trample
6 /
6
{6}{B}{B}{B}
Demon of Death's Gate
Creature - Demon
You may pay 6 life and sacrifice three black creatures rather than pay this spell's mana cost.
Flying, trample
9 /
9
{2}{B}{B}
Desecration Demon
Creature - Demon
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.
6 /
6
{2}{B}{B}
Diabolic Tutor
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
--
Dragonskull Summit
Land
Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.
{T}: Add {B} or {R}.
{1}{B}{B}
Embodiment of Agonies
Creature - Demon
Flying, deathtouch
Embodiment of Agonies enters the battlefield with a +1/+1 counter on it for each different mana cost among nonland cards in your graveyard. (For example, {2}{B} and {1}{B}{B} are different mana costs.)
0 /
0
--
Evolving Wilds
Land
{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
--
Exotic Orchard
Land
{T}: Add one mana of any color that a land an opponent controls could produce.
{3}{W}{W}
Fumigate
Sorcery
Destroy all creatures. You gain 1 life for each creature destroyed this way.
--
Godless Shrine
Land - Plains Swamp
({T}: Add {W} or {B}.)
As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
--
Grixis Panorama
Land
{T}: Add {C}.
{1}, {T}, Sacrifice Grixis Panorama: Search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.
{4}{B}{B}
Harvester of Souls
Creature - Demon
Deathtouch
Whenever another nontoken creature dies, you may draw a card.
5 /
5
{5}{B}{B}
Herald of Anguish
Creature - Demon
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Flying
At the beginning of your end step, each opponent discards a card.
{1}{B}, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.
5 /
5
{R}{W}{ // }{W}{B}
Hide // Seek
Instant // Instant
Put target artifact or enchantment on the bottom of its owner's library.
Search target opponent's library for a card and exile it. You gain life equal to its mana value. Then that player shuffles.
{3}{B}{B}
Indulgent Tormentor
Creature - Demon
Flying
At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life.
5 /
3
--
Isolated Chapel
Land
Isolated Chapel enters the battlefield tapped unless you control a Plains or a Swamp.
{T}: Add {W} or {B}.
--
Jund Panorama
Land
{T}: Add {C}.
{1}, {T}, Sacrifice Jund Panorama: Search your library for a basic Swamp, Mountain, or Forest card, put it onto the battlefield tapped, then shuffle.
{4}{B/P}{B/P}{B/P}
K'rrik, Son of Yawgmoth
Legendary Creature - Phyrexian Horror Minion
({B/P} can be paid with either {B} or 2 life.)
Lifelink
For each {B} in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik, Son of Yawgmoth.
2 /
2
{1}{R}{W}{B}
Kaalia of the Vast
Legendary Creature - Human Cleric
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.
2 /
2
{B}
Kaya's Ghostform
Enchantment - Aura
Enchant creature or planeswalker you control
When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.
{5}{B}{B}
Kindred Dominance
Sorcery
Choose a creature type. Destroy all creatures that aren't of the chosen type.
{4}{B}{B}
Kothophed, Soul Hoarder
Legendary Creature - Demon
Flying
Whenever a permanent owned by another player is put into a graveyard from the battlefield, you draw a card and you lose 1 life.
6 /
6
{2}
Lightning Greaves
Artifact - Equipment
Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip {0}
{3}{B}{B}
Liliana, the Necromancer
Legendary Planeswalker - Liliana
+1: Target player loses 2 life.
-1: Return target creature card from your graveyard to your hand.
-7: Destroy up to two target creatures. Put up to two creature cards from graveyards onto the battlefield under your control.
L:
4
{4}{B}{B}{B}
Lord of the Void
Creature - Demon
Flying
Whenever Lord of the Void deals combat damage to a player, exile the top seven cards of that player's library, then put a creature card from among them onto the battlefield under your control.
7 /
7
{4}{B}
Magus of the Coffers
Creature - Human Wizard
{2}, {T}: Add {B} for each Swamp you control.
4 /
4
{2}{B}{B}{R}{R}
Malfegor
Legendary Creature - Demon Dragon
Flying
When Malfegor enters the battlefield, discard your hand. Each opponent sacrifices a creature for each card discarded this way.
6 /
6
{3}
Manalith
Artifact
{T}: Add one mana of any color.
{3}{B}{R}
Master of Cruelties
Creature - Demon
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.
1 /
4
{4}{W}{B}
Merciless Eviction
Sorcery
Choose one --
• Exile all artifacts.
• Exile all creatures.
• Exile all enchantments.
• Exile all planeswalkers.
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Myriad Landscape
Land
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.
--
Nomad Outpost
Land
Nomad Outpost enters the battlefield tapped.
{T}: Add {R}, {W}, or {B}.
{4}
Nyx Lotus
Legendary Artifact
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.)
{3}{B}{B}
Ob Nixilis Reignited
Legendary Planeswalker - Nixilis
+1: You draw a card and you lose 1 life.
-3: Destroy target creature.
-8: Target opponent gets an emblem with "Whenever a player draws a card, you lose 2 life."
L:
5
{3}{B}{B}
Ob Nixilis of the Black Oath
Legendary Planeswalker - Nixilis
+2: Each opponent loses 1 life. You gain life equal to the life lost this way.
-2: Create a 5/5 black Demon creature token with flying. You lose 2 life.
-8: You get an emblem with "{1}{B}, Sacrifice a creature: You gain X life and draw X cards, where X is the sacrificed creature's power."
Ob Nixilis of the Black Oath can be your commander.
L:
3
{4}{B}{B}
Ob Nixilis, Unshackled
Legendary Creature - Demon
Flying, trample
Whenever an opponent searches their library, that player sacrifices a creature and loses 10 life.
Whenever another creature dies, put a +1/+1 counter on Ob Nixilis, Unshackled.
4 /
4
{3}{B}{B}
Ob Nixilis, the Fallen
Legendary Creature - Demon
Landfall -- Whenever a land enters the battlefield under your control, you may have target player lose 3 life. If you do, put three +1/+1 counters on Ob Nixilis, the Fallen.
3 /
3
--
Orzhov Basilica
Land
Orzhov Basilica enters the battlefield tapped.
When Orzhov Basilica enters the battlefield, return a land you control to its owner's hand.
{T}: Add {W}{B}.
--
Orzhov Guildgate
Land - Gate
Orzhov Guildgate enters the battlefield tapped.
{T}: Add {W} or {B}.
{2}
Orzhov Signet
Artifact
{1}, {T}: Add {W}{B}.
{5}{B}{B}
Overseer of the Damned
Creature - Demon
Flying
When Overseer of the Damned enters the battlefield, you may destroy target creature.
Whenever a nontoken creature an opponent controls dies, create a tapped 2/2 black Zombie creature token.
5 /
5
{1}{B}{B}
Phyrexian Arena
Enchantment
At the beginning of your upkeep, you draw a card and you lose 1 life.
{B}
Phyrexian Reclamation
Enchantment
{1}{B}, Pay 2 life: Return target creature card from your graveyard to your hand.
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
{4}
Quicksilver Amulet
Artifact
{4}, {T}: You may put a creature card from your hand onto the battlefield.
--
Rakdos Carnarium
Land
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}.
--
Rakdos Guildgate
Land - Gate
Rakdos Guildgate enters the battlefield tapped.
{T}: Add {B} or {R}.
{2}
Rakdos Signet
Artifact
{1}, {T}: Add {B}{R}.
{B}{B}{R}{R}
Rakdos, Lord of Riots
Legendary Creature - Demon
You can't cast this spell 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.
6 /
6
{5}{B}{B}{B}
Razaketh, the Foulblooded
Legendary Creature - Demon
Flying, trample
Pay 2 life, Sacrifice another creature: Search your library for a card, put that card into your hand, then shuffle.
8 /
8
{3}{B}{B}{B}
Reaper from the Abyss
Creature - Demon
Flying
Morbid -- At the beginning of each end step, if a creature died this turn, destroy target non-Demon creature.
6 /
6
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
{7}{B}{B}
Rise of the Dark Realms
Sorcery
Put all creature cards from all graveyards onto the battlefield under your control.
--
Rocky Tar Pit
Land
Rocky Tar Pit enters the battlefield tapped.
{T}, Sacrifice Rocky Tar Pit: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.
--
Rogue's Passage
Land
{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.
{5}{B}{B}
Rune-Scarred Demon
Creature - Demon
Flying
When Rune-Scarred Demon enters the battlefield, search your library for a card, put it into your hand, then shuffle.
6 /
6
--
Sacred Foundry
Land - Mountain Plains
({T}: Add {R} or {W}.)
As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{W}
Silence
Instant
Your opponents can't cast spells this turn.
{3}{W}
Smothering Tithe
Enchantment
Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
{W}
Swords to Plowshares
Instant
Exile target creature. Its controller gains life equal to its power.
{2}{W}
Teferi's Protection
Instant
Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.)
Exile Teferi's Protection.
--
Temple of Malice
Land
Temple of Malice enters the battlefield tapped.
When Temple of Malice enters the battlefield, scry 1.
{T}: Add {B} or {R}.
--
Temple of Silence
Land
Temple of Silence enters the battlefield tapped.
When Temple of Silence enters the battlefield, scry 1.
{T}: Add {W} or {B}.
--
Temple of the False God
Land
{T}: Add {C}{C}. Activate only if you control five or more lands.
--
Terramorphic Expanse
Land
{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{X}{B}{B}
Torment of Hailfire
Sorcery
Repeat the following process X times. Each opponent loses 3 life unless that player sacrifices a nonland permanent or discards a card.
{1}{B}{B}
Underworld Connections
Enchantment - Aura
Enchant land
Enchanted land has "{T}, Pay 1 life: Draw a card."
--
Urborg, Tomb of Yawgmoth
Legendary Land
Each land is a Swamp in addition to its other land types.
{3}
Urza's Incubator
Artifact
As Urza's Incubator enters the battlefield, choose a creature type.
Creature spells of the chosen type cost {2} less to cast.
--
Vault of the Archangel
Land
{T}: Add {C}.
{2}{W}{B}, {T}: Creatures you control gain deathtouch and lifelink until end of turn.
{3}
Whispersilk Cloak
Artifact - Equipment
Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)