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
{2}{B}{R}
Blazing Specter
Creature - Specter
Flying, haste
Whenever Blazing Specter deals combat damage to a player, that player discards a card.
2 /
2
{1}{B}{R}
Blightning
Sorcery
Blightning deals 3 damage to target player or planeswalker. That player or that planeswalker's controller discards two cards.
{2}{U}{B}
Blizzard Specter
Snow Creature - Specter
Flying
Whenever Blizzard Specter deals combat damage to a player, choose one --
• That player returns a permanent they control to its owner's hand.
• That player discards a card.
2 /
3
--
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
{X}{U}{U}{U}
Blue Sun's Zenith
Instant
Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.
{R}
Burning Inquiry
Sorcery
Each player draws three cards, then discards three cards at random.
{U}{B}
Countersquall
Instant
Counter target noncreature spell. Its controller loses 2 life.
--
Crosis's Catacombs
Land - Lair
When Crosis's Catacombs enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand.
{T}: Add {U}, {B}, or {R}.
{3}{U}{B}{R}
Crosis, the Purger
Legendary Creature - Dragon
Flying
Whenever Crosis, the Purger deals combat damage to a player, you may pay {2}{B}. If you do, choose a color, then that player reveals their hand and discards all cards of that color.
6 /
6
{U}{U}{B}{B}{B}{R}{R}
Cruel Ultimatum
Sorcery
Target opponent sacrifices a creature, discards three cards, then loses 5 life. You return a creature card from your graveyard to your hand, draw three cards, then gain 5 life.
--
Crumbling Necropolis
Land
Crumbling Necropolis enters the battlefield tapped.
{T}: Add {U}, {B}, or {R}.
--
Crypt of the Eternals
Land
When Crypt of the Eternals enters the battlefield, you gain 1 life.
{T}: Add {C}.
{1}, {T}: Add {U}, {B}, or {R}.
{2}{B}
Cunning Lethemancer
Creature - Human Wizard
At the beginning of your upkeep, each player discards a card.
2 /
2
{X}{B}{B}
Damnable Pact
Sorcery
Target player draws X cards and loses X life.
{2}{B}
Delirium Skeins
Sorcery
Each player discards three cards.
{X}{3}{B}{B}
Diabolic Revelation
Sorcery
Search your library for up to X cards, put those cards into your hand, then shuffle.
{U/B}{U/B}
Dimir Guildmage
Creature - Human Wizard
({U/B} can be paid with either {U} or {B}.)
{3}{U}: Target player draws a card. Activate only as a sorcery.
{3}{B}: Target player discards a card. Activate only as a sorcery.
2 /
2
{3}{U/B}{U/B}
Dire Undercurrents
Enchantment
Whenever a blue creature enters the battlefield under your control, you may have target player draw a card.
Whenever a black creature enters the battlefield under your control, you may have target player discard a card.
{5}{R}{R}
Dragon Mage
Creature - Dragon Wizard
Flying
Whenever Dragon Mage deals combat damage to a player, each player discards their hand, then draws seven cards.
5 /
5
{3}{U}{B}{R}
Elder Mastery
Enchantment - Aura
Enchant creature
Enchanted creature gets +3/+3 and has flying.
Whenever enchanted creature deals damage to a player, that player discards two cards.
{X}{U}{U}
Fascination
Sorcery
Choose one --
• Each player draws X cards.
• Each player mills X cards.
{3}{B}
Fate Unraveler
Enchantment Creature - Hag
Whenever an opponent draws a card, Fate Unraveler deals 1 damage to that player.
3 /
4
{1}{U}{U}
Fatespinner
Creature - Human Wizard
At the beginning of each opponent's upkeep, that player chooses draw step, main phase, or combat phase. The player skips each instance of the chosen step or phase this turn.
1 /
2
{3}{B}
Fell Specter
Creature - Specter
Flying
When Fell Specter enters, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.
1 /
3
--
Fetid Pools
Land - Island Swamp
({T}: Add {U} or {B}.)
Fetid Pools enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)
{1}{U}{R}
Fevered Visions
Enchantment
At the beginning of each player's end step, that player draws a card. If the player is your opponent and has four or more cards in hand, Fevered Visions deals 2 damage to that player.
{4}
Font of Mythos
Artifact
At the beginning of each player's draw step, that player draws two additional cards.
--
Geier Reach Sanitarium
Legendary Land
{T}: Add {C}.
{2}, {T}: Each player draws a card, then discards a card.
--
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}
Harrowing Journey
Sorcery
Target player draws three cards and loses 3 life.
{3}{U/B}
Helm of the Ghastlord
Enchantment - Aura
Enchant creature
As long as enchanted creature is blue, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, draw a card."
As long as enchanted creature is black, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, that player discards a card."
{2}{R}
Honden of Infinite Rage
Legendary Enchantment - Shrine
At the beginning of your upkeep, Honden of Infinite Rage deals damage to any target equal to the number of Shrines you control.
{3}{B}
Honden of Night's Reach
Legendary Enchantment - Shrine
At the beginning of your upkeep, target opponent discards a card for each Shrine you control.
{4}{U}
Honden of Seeing Winds
Legendary Enchantment - Shrine
At the beginning of your upkeep, draw a card for each Shrine you control.
{2}
Howling Mine
Artifact
At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.
{3}{R}{R}
Incendiary Command
Sorcery
Choose two --
• Incendiary Command deals 4 damage to target player or planeswalker.
• Incendiary Command deals 2 damage to each creature.
• Destroy target nonbasic land.
• Each player discards all the cards in their hand, then draws that many cards.
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{B}
Kederekt Parasite
Creature - Horror
Whenever an opponent draws a card, if you control a red permanent, you may have Kederekt Parasite deal 1 damage to that player.
1 /
1
{2}
Lightning Greaves
Artifact - Equipment
Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip {0}
{B}{R}{R}
Lightning Skelemental
Creature - Elemental Skeleton
Trample, haste
Whenever Lightning Skelemental deals combat damage to a player, that player discards two cards.
At the beginning of the end step, sacrifice Lightning Skelemental.
6 /
1
{3}{U}{U}
Magus of the Jar
Creature - Human Wizard
{T}, Sacrifice Magus of the Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.
3 /
3
{2}{R}
Magus of the Wheel
Creature - Human Wizard
{1}{R}, {T}, Sacrifice Magus of the Wheel: Each player discards their hand, then draws seven cards.
3 /
3
{1}{B}{B}
Master of the Feast
Enchantment Creature - Demon
Flying
At the beginning of your upkeep, each opponent draws a card.
5 /
5
{2}{B}
Megrim
Enchantment
Whenever an opponent discards a card, Megrim deals 2 damage to that player.
{X}{B}{B}
Mind Shatter
Sorcery
Target player discards X cards at random.
{1}{U}{B}
Mistvein Borderpost
Artifact
You may pay {1} and return a basic land you control to its owner's hand rather than pay this spell's mana cost.
Mistvein Borderpost enters the battlefield tapped.
{T}: Add {U} or {B}.
{1}{R}{R}
Molten Psyche
Sorcery
Each player shuffles the cards from their hand into their library, then draws that many cards.
Metalcraft -- If you control three or more artifacts, Molten Psyche deals damage to each opponent equal to the number of cards that player has drawn this turn.
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{2}{U}{B}{R}
Nekusar, the Mindrazer
Legendary Creature - Zombie Wizard
At the beginning of each player's draw step, that player draws an additional card.
Whenever an opponent draws a card, Nekusar, the Mindrazer deals 1 damage to that player.
2 /
4
{3}
Obelisk of Grixis
Artifact
{T}: Add {U}, {B}, or {R}.
{3}{B}{B}
Painful Quandary
Enchantment
Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.
{1}{U}{B}
Perplex
Instant
Counter target spell unless its controller discards their hand.
Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
{5}
Psychosis Crawler
Artifact Creature - Phyrexian Horror
Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.
Whenever you draw a card, each opponent loses 1 life.
* /
*
{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}{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.
{3}{R}{R}
Reforge the Soul
Sorcery
Each player discards their hand, then draws seven cards.
Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
{3}{B}{B}
Remorseless Punishment
Sorcery
Target opponent loses 5 life unless that player discards two cards or sacrifices a creature or planeswalker. Repeat this process once.
{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
{4}{B}{B}
Scythe Specter
Creature - Specter
Flying
Whenever Scythe Specter deals combat damage to a player, each opponent discards a card. Each player who discarded a card with the highest mana value among cards discarded this way loses life equal to that mana value.
4 /
4
{U}{B}{R}
Sedraxis Specter
Creature - Specter
Flying
Whenever Sedraxis Specter deals combat damage to a player, that player discards a card.
Unearth {1}{B} ({1}{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.)
3 /
2
{B}{B}
Sign in Blood
Sorcery
Target player draws two cards and loses 2 life.
{4}{B}{R}
Sire of Insanity
Creature - Demon
At the beginning of each end step, each player discards their hand.
6 /
4
{1}{U}{B}
Siren of the Silent Song
Creature - Zombie Siren
Flying
Inspired -- Whenever Siren of the Silent Song becomes untapped, each opponent discards a card, then each opponent mills a card.
2 /
1
--
Sulfur Vent
Land
Sulfur Vent enters the battlefield tapped.
{T}: Add {B}.
{T}, Sacrifice Sulfur Vent: Add {U}{R}.
--
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}.)
{2}{B}{ // }{2}{R}
Toil // Trouble
Sorcery // Sorcery
Target player draws two cards and loses 2 life.
Fuse (You may cast one or both halves of this card from your hand.)
Trouble deals damage to target player equal to the number of cards in that player's hand.
Fuse (You may cast one or both halves of this card from your hand.)
{B}{B}{B}
Underworld Dreams
Enchantment
Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.
--
Unstable Frontier
Land
{T}: Add {C}.
{T}: Target land you control becomes the basic land type of your choice until end of turn.
{1}{B}{R}
Veinfire Borderpost
Artifact
You may pay {1} and return a basic land you control to its owner's hand rather than pay this spell's mana cost.
Veinfire Borderpost enters the battlefield tapped.
{T}: Add {B} or {R}.
{1}{U}
Vision Skeins
Instant
Each player draws two cards.
{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.
--
Wheel of Fate
Sorcery
Suspend 4--{1}{R} (Rather than cast this card from your hand, pay {1}{R} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)
Each player discards their hand, then draws seven cards.
{2}{U}{B}
Whispering Madness
Sorcery
Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
{2}{U}
Windfall
Sorcery
Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
{4}{B}
Bone Miser
Creature - Zombie Wizard
Whenever you discard a creature card, create a 2/2 black Zombie creature token.
Whenever you discard a land card, add {B}{B}.
Whenever you discard a noncreature, nonland card, draw a card.
4 /
4
{4}{B}{B}{B}
Peer into the Abyss
Sorcery
Target player draws cards equal to half the number of cards in their library and loses half their life. Round up each time.
{2}{B/R}{B/R}
Spiteful Visions
Enchantment
At the beginning of each player's draw step, that player draws an additional card.
Whenever a player draws a card, Spiteful Visions deals 1 damage to that player.
{B}{R}
Stormfist Crusader
Creature - Human Knight
Menace
At the beginning of your upkeep, each player draws a card and loses 1 life.
2 /
2
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{2}{R}
Wheel of Misfortune
Sorcery
Each player secretly chooses a number 0 or greater, then all players reveal those numbers simultaneously and determine the highest and lowest numbers revealed this way. Wheel of Misfortune deals damage equal to the highest number to each player who chose that number. Each player who didn't choose the lowest number discards their hand, then draws seven cards.