Whenever an opponent discards a card, Abyssal Nocturnus gets +2/+2 and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
2 /
2
{3}{B}{B}
Archfiend of Ifnir
Creature - Demon
Flying
Whenever you cycle or discard another card, put a -1/-1 counter on each creature your opponents control.
Cycling {2} ({2}, Discard this card: Draw a card.)
5 /
4
{5}{B}{B}
Behold the Beyond
Sorcery
Discard your hand. Search your library for three cards, put them into your hand, then shuffle.
{B}
Blackmail
Sorcery
Target player reveals three cards from their hand and you choose one of them. That player discards that card.
{1}{B}
Blood Artist
Creature - Vampire
Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.
0 /
1
{2}{B}
Bog Witch
Creature - Human Spellshaper
{B}, {T}, Discard a card: Add {B}{B}{B}.
1 /
1
{3}{B}
Bold Plagiarist
Creature - Vampire Rogue
Flash
Whenever an opponent puts one or more counters on a creature they control, they put the same number and kind of counters on Bold Plagiarist.
2 /
2
{6}{B}
Cabal Conditioning
Sorcery
Any number of target players each discard a number of cards equal to the highest mana value among permanents you control.
--
Cabal Stronghold
Land
{T}: Add {C}.
{3}, {T}: Add {B} for each basic Swamp you control.
{2}{B}{B}
Court of Ambition
Enchantment
When Court of Ambition enters the battlefield, you become the monarch.
At the beginning of your upkeep, each opponent loses 3 life unless they discard a card. If you're the monarch, instead each opponent loses 6 life unless they discard two cards.
{2}
Cranial Archive
Artifact
{2}, Exile Cranial Archive: Target player shuffles their graveyard into their library. Draw a card.
--
Crypt of Agadeem
Land
Crypt of Agadeem enters the battlefield tapped.
{T}: Add {B}.
{2}, {T}: Add {B} for each black creature card in your graveyard.
{B}
Culling the Weak
Instant
As an additional cost to cast this spell, sacrifice a creature.
Add {B}{B}{B}{B}.
{2}{B}
Cunning Lethemancer
Creature - Human Wizard
At the beginning of your upkeep, each player discards a card.
2 /
2
{2}{B}
Cunning Rhetoric
Enchantment
Whenever an opponent attacks you and/or one or more planeswalkers you control, exile the top card of that player's library. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast it.
{2}{B}{B}
Curse of Wizardry
Enchantment
As Curse of Wizardry enters the battlefield, choose a color.
Whenever a player casts a spell of the chosen color, that player loses 1 life.
{2}{B}
Dark Deal
Sorcery
Each player discards all the cards in their hand, then draws that many cards minus one.
{2}{B}{B}
Dark Suspicions
Enchantment
At the beginning of each opponent's upkeep, that player loses X life, where X is the number of cards in that player's hand minus the number of cards in your hand.
{B}
Darkness
Instant
Prevent all combat damage that would be dealt this turn.
--
Esper Panorama
Land
{T}: Add {C}.
{1}, {T}, Sacrifice Esper Panorama: Search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tapped, then shuffle.
--
Everglades
Land
Everglades enters the battlefield tapped.
When Everglades enters the battlefield, sacrifice it unless you return an untapped Swamp you control to its owner's hand.
{T}: Add {C}{B}.
{4}{B}
Exquisite Blood
Enchantment
Whenever an opponent loses life, you gain that much life.
--
Fabled Passage
Land
{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.
{B}{B}
False Cure
Instant
Until end of turn, whenever a player gains life, that player loses 2 life for each 1 life they gained.
{3}{B}
Fate Unraveler
Enchantment Creature - Hag
Whenever an opponent draws a card, Fate Unraveler deals 1 damage to that player.
3 /
4
{1}
Feldon's Cane
Artifact
{T}, Exile Feldon's Cane: Shuffle your graveyard into your library.
{3}{B}
Fell Specter
Creature - Specter
Flying
When Fell Specter enters the battlefield, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.
1 /
3
{1}{B}{B}
Force of Despair
Instant
If it's not your turn, you may exile a black card from your hand rather than pay this spell's mana cost.
Destroy all creatures that entered the battlefield this turn.
{B}
Funeral Charm
Instant
Choose one --
• Target player discards a card.
• Target creature gets +2/-1 until end of turn.
• Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)
{4}
Geth's Grimoire
Artifact
Whenever an opponent discards a card, you may draw a card.
--
Ghost Quarter
Land
{T}: Add {C}.
{T}, Sacrifice Ghost Quarter: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.
{B}
Gravebind
Instant
Target creature can't be regenerated this turn.
Draw a card at the beginning of the next turn's upkeep.
{3}{B}{B}
Greel, Mind Raker
Legendary Creature - Horror Spellshaper
{X}{B}, {T}, Discard two cards: Target player discards X cards at random.
3 /
3
--
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.
{3}{B}{B}
Guiltfeeder
Creature - Horror
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Whenever Guiltfeeder attacks and isn't blocked, defending player loses 1 life for each card in their graveyard.
0 /
4
{B}{B}
Hymn to Tourach
Sorcery
Target player discards two cards at random.
{1}{B}{B}
Hypnotic Specter
Creature - Specter
Flying
Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.
2 /
2
{4}
Isolation Cell
Artifact
Whenever an opponent casts a creature spell, that player loses 2 life unless they pay {2}.
{B}{B}
Kalastria Highborn
Creature - Vampire Shaman
Whenever Kalastria Highborn or another Vampire you control dies, you may pay {B}. If you do, target player loses 2 life and you gain 2 life.
2 /
2
{2}{B}{B}
Korlash, Heir to Blackblade
Legendary Creature - Zombie Warrior
Korlash, Heir to Blackblade's power and toughness are each equal to the number of Swamps you control.
{1}{B}: Regenerate Korlash.
Grandeur -- Discard another card named Korlash, Heir to Blackblade: Search your library for up to two Swamp cards, put them onto the battlefield tapped, then shuffle.
* /
*
--
Leechridden Swamp
Land - Swamp
({T}: Add {B}.)
Leechridden Swamp enters the battlefield tapped.
{B}, {T}: Each opponent loses 1 life. Activate only if you control two or more black permanents.
{1}{B}{B}
Liliana of the Veil
Legendary Planeswalker - Liliana
+1: Each player discards a card.
-2: Target player sacrifices a creature.
-6: Separate all permanents target player controls into two piles. That player sacrifices all permanents in the pile of their choice.
L:
3
{1}{B}
Liliana's Caress
Enchantment
Whenever an opponent discards a card, that player loses 2 life.
{1}{B}{B}
Liliana, Heretical Healer
Legendary Creature - Human Cleric
Lifelink
Whenever another nontoken creature you control dies, exile Liliana, Heretical Healer, then return her to the battlefield transformed under her owner's control. If you do, create a 2/2 black Zombie creature token.
2 /
3
--
Liliana, Defiant Necromancer
Legendary Planeswalker - Liliana
+2: Each player discards a card.
-X: Return target nonlegendary creature card with mana value X from your graveyard to the battlefield.
-8: You get an emblem with "Whenever a creature dies, return it to the battlefield under your control at the beginning of the next end step."
2 /
3
{0}
Lotus Petal
Artifact
{T}, Sacrifice Lotus Petal: Add one mana of any color.
{B}{B}
Malicious Affliction
Instant
Morbid -- When you cast this spell, if a creature died this turn, you may copy Malicious Affliction and may choose a new target for the copy.
Destroy target nonblack creature.
{2}{B}
Megrim
Enchantment
Whenever an opponent discards a card, Megrim deals 2 damage to that player.
{2}
Mindcrank
Artifact
Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)
{2}{B}{B}
Mindslicer
Creature - Horror
When Mindslicer dies, each player discards their hand.
4 /
3
{2}{B}
Necrogen Mists
Enchantment
At the beginning of each player's upkeep, that player discards a card.
{1}{B}
Netherborn Altar
Artifact
{T}, Put a soul counter on Netherborn Altar: Put your commander into your hand from the command zone. Then you lose 3 life for each soul counter on Netherborn Altar.
{1}{B}
Night's Whisper
Sorcery
You draw two cards and you lose 2 life.
{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, the Hate-Twisted
Legendary Planeswalker - Nixilis
Whenever an opponent draws a card, Ob Nixilis, the Hate-Twisted deals 1 damage to that player.
-2: Destroy target creature. Its controller draws two cards.
L:
5
{2}{B}
Onyx Goblet
Artifact
{T}: Target player loses 1 life.
{1}{B}{B}
Oppression
Enchantment
Whenever a player casts a spell, that player discards a card.
{3}{B}{B}
Painful Quandary
Enchantment
Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.
{4}
Panharmonicon
Artifact
If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
{5}{B}{B}
Patron of the Nezumi
Legendary Creature - Spirit
Rat offering (You may cast this card any time you could cast an instant by sacrificing a Rat and paying the difference in mana costs between this and the sacrificed Rat. Mana cost includes color.)
Whenever a permanent is put into an opponent's graveyard, that player loses 1 life.
6 /
6
{3}{B}{B}
Polluted Bonds
Enchantment
Whenever a land enters the battlefield under an opponent's control, that player loses 2 life and you gain 2 life.
{B}{B}{B}
Pox
Sorcery
Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control, then sacrifices a third of the lands they control. Round up each time.
{B}
Quest for the Nihil Stone
Enchantment
Whenever an opponent discards a card, you may put a quest counter on Quest for the Nihil Stone.
At the beginning of each opponent's upkeep, if that player has no cards in hand and Quest for the Nihil Stone has two or more quest counters on it, you may have that player lose 5 life.
{3}
Quietus Spike
Artifact - Equipment
Equipped creature has deathtouch.
Whenever equipped creature deals combat damage to a player, that player loses half their life, rounded up.
Equip {3}
{3}{B}
Raiders' Wake
Enchantment
Whenever an opponent discards a card, that player loses 2 life.
Raid -- At the beginning of your end step, if you attacked this turn, target opponent discards a card.
{B}
Raven's Crime
Sorcery
Target player discards a card.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
--
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.
{2}{B}
Rotting Regisaur
Creature - Zombie Dinosaur
At the beginning of your upkeep, discard a card.
7 /
6
{3}{B}{B}
Sadistic Hypnotist
Creature - Human Minion
Sacrifice a creature: Target player discards two cards. Activate only as a sorcery.
2 /
2
{2}{B}{B}
Sangromancer
Creature - Vampire Shaman
Flying
Whenever a creature an opponent controls dies, you may gain 3 life.
Whenever an opponent discards a card, you may gain 3 life.
3 /
3
{3}{B}{B}
Sanguine Bond
Enchantment
Whenever you gain life, target opponent loses that much life.
{6}{B}{B}
Sanguine Praetor
Creature - Avatar Praetor
{B}, Sacrifice a creature: Destroy each creature with the same mana value as the sacrificed creature.
7 /
5
{B}{B}
Scepter of Fugue
Artifact
{1}{B}, {T}: Target player discards a card. Activate only during your turn.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{B}
Songs of the Damned
Instant
Add {B} for each creature card in your graveyard.
{X}{B}
Suffer the Past
Instant
Exile X target cards from target player's graveyard. For each card exiled this way, that player loses 1 life and you gain 1 life.
--
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}.)
--
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}.)
{3}{B}
Syphon Mind
Sorcery
Each other player discards a card. You draw a card for each card discarded this way.
{2}{B}
Tainted Remedy
Enchantment
If an opponent would gain life, that player loses that much life instead.
{3}{B}{B}
Tergrid, God of Fright
Legendary Creature - God
Menace
Whenever an opponent sacrifices a nontoken permanent or discards a permanent card, you may put that card from a graveyard onto the battlefield under your control.
4 /
5
--
Tergrid's Lantern
Legendary Artifact
{T}: Target player loses 3 life unless they sacrifice a nonland permanent or discard a card.
{3}{B}: Untap Tergrid's Lantern.
4 /
5
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{B}
Thoughtseize
Sorcery
Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.
{4}{B}
Thrilling Encore
Instant
Put onto the battlefield under your control all creature cards in all graveyards that were put there from the battlefield this turn.
{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.
{B}
Tortured Existence
Enchantment
{B}, Discard a creature card: Return target creature card from your graveyard to your hand.
{B}{B}
Urborg Justice
Instant
Target opponent sacrifices a creature for each creature put into your graveyard from the battlefield this turn.
{2}{B}
Virtus the Veiled
Legendary Creature - Azra Assassin
Partner with Gorm the Great (When this creature enters the battlefield, target player may put Gorm into their hand from their library, then shuffle.)
Deathtouch
Whenever Virtus the Veiled deals combat damage to a player, that player loses half their life, rounded up.
1 /
1
{3}{B}{B}
Voldaren Pariah
Creature - Vampire Horror
Flying
Sacrifice three other creatures: Transform Voldaren Pariah.
Madness {B}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
3 /
3
--
Abolisher of Bloodlines
Creature - Eldrazi Vampire
Flying
When this creature transforms into Abolisher of Bloodlines, target opponent sacrifices three creatures.
3 /
3
{1}{B}
Waste Not
Enchantment
Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token.
Whenever an opponent discards a land card, add {B}{B}.
Whenever an opponent discards a noncreature, nonland card, draw a card.
--
Westvale Abbey
Land
{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.
--
Ormendahl, Profane Prince
Legendary Creature - Demon
Flying, lifelink, indestructible, haste
{2}{B}{B}
Whip of Erebos
Legendary Enchantment Artifact
Creatures you control have lifelink.
{2}{B}{B}, {T}: Return target creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step. If it would leave the battlefield, exile it instead of putting it anywhere else. Activate only as a sorcery.
{2}{B}
Words of Waste
Enchantment
{1}: The next time you would draw a card this turn, each opponent discards a card instead.