If X is 5 or more, this spell can't be countered and the damage can't be prevented.
{2/B}{2/B}{2/B}
Beseech the Queen
Sorcery
({2/B} can be paid with any two mana or with {B}. This card's mana value is 6.)
Search your library for a card with mana value less than or equal to the number of lands you control, reveal it, put it into your hand, then shuffle.
{3}{B}{R}
Bituminous Blast
Instant
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)
Bituminous Blast deals 4 damage to target creature.
{3}{B}{B}
Black Market
Enchantment
Whenever a creature dies, put a charge counter on Black Market.
At the beginning of your precombat main phase, add {B} for each charge counter on Black Market.
{X}{B}{B}
Black Sun's Zenith
Sorcery
Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.
{8}{R}
Blasphemous Act
Sorcery
This spell costs {1} less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.
{3}{R}
Boil
Instant
Destroy all Islands.
{1}{R}
Braid of Fire
Enchantment
Cumulative upkeep--Add {R}. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
{X}{R}
Burn from Within
Sorcery
Burn from Within deals X damage to any target. If a creature is dealt damage this way, it loses indestructible until end of turn. If that creature would die this turn, exile it instead.
{3}{R}{R}
Burning Sands
Enchantment
Whenever a creature dies, that creature's controller sacrifices a land.
{2}{R}{R}
Chain Reaction
Sorcery
Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.
{2}{R}
Chaos Warp
Instant
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.
{5}{B}
Choice of Damnations
Sorcery - Arcane
Target opponent chooses a number. You may have that player lose that much life. If you don't, that player sacrifices all but that many permanents.
{X}{R}{R}
Comet Storm
Instant
Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.)
Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.
{3}
Crawlspace
Artifact
No more than two creatures can attack you each combat.
{B}
Dark Ritual
Instant
Add {B}{B}{B}.
{3}{B}{B}
Death Pits of Rath
Enchantment
Whenever a creature is dealt damage, destroy it. It can't be regenerated.
{X}{R}
Demonfire
Sorcery
Demonfire deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead.
Hellbent -- If you have no cards in hand, this spell can't be countered and the damage can't be prevented.
{2}{B}{B}
Diabolic Tutor
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
{X}{R}
Disintegrate
Sorcery
Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.
{1}{B/P}{B/P}
Dismember
Instant
({B/P} can be paid with either {B} or 2 life.)
Target creature gets -5/-5 until end of turn.
{1}{B}
Doom Blade
Instant
Destroy target nonblack creature.
{B}{R}
Dreadbore
Sorcery
Destroy target creature or planeswalker.
--
Evolving Wilds
Land
{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{X}{B}{B}
Exsanguinate
Sorcery
Each opponent loses X life. You gain life equal to the life lost this way.
--
Foreboding Ruins
Land
As Foreboding Ruins enters the battlefield, you may reveal a Swamp or Mountain card from your hand. If you don't, Foreboding Ruins enters the battlefield tapped.
{T}: Add {B} or {R}.
--
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.
{1}{B}
Go for the Throat
Instant
Destroy target nonartifact creature.
{1}{B}
Hero's Demise
Instant
Destroy target legendary creature.
{1}{B}{B}
Hero's Downfall
Instant
Destroy target creature or planeswalker.
{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.
{4}{B}
Increasing Ambition
Sorcery
Search your library for a card and put that card into your hand. If this spell was cast from a graveyard, instead search your library for two cards and put those cards into your hand. Then shuffle.
Flashback {7}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{5}{R}{R}{R}
Insurrection
Sorcery
Untap all creatures and gain control of them until end of turn. They gain haste until end of turn.
{2}
Jet Medallion
Artifact
Black spells you cast cost {1} less to cast.
{5}{B}{R}
Kaervek the Merciless
Legendary Creature - Human Shaman
Whenever an opponent casts a spell, Kaervek the Merciless deals damage equal to that spell's mana value to any target.
5 /
4
{X}{R}
Kaervek's Torch
Sorcery
As long as Kaervek's Torch is on the stack, spells that target it cost {2} more to cast.
Kaervek's Torch deals X damage to any target.
{X}{B}
Killing Wave
Sorcery
For each creature, its controller sacrifices it unless they pay X life.
{2}{B}{B}
Lethal Vapors
Enchantment
Whenever a creature enters the battlefield, destroy it.
{0}: Destroy Lethal Vapors. You skip your next turn. Any player may activate this ability.
{3}{R}{R}
Mass Mutiny
Sorcery
For each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain haste until end of 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}.)
--
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}.)
{1}{B}{B}
Murder
Instant
Destroy target creature.
--
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.
{1}{B}{R}
Pain Magnification
Enchantment
Whenever an opponent is dealt 3 or more damage by a single source, 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.
{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.
{3}{R}{R}
Radiate
Instant
Choose target instant or sorcery spell that targets only a single permanent or player. Copy that spell for each other permanent or player the spell could target. Each copy targets a different one of those permanents and players.
{B}{R}
Rakdos Charm
Instant
Choose one --
• Exile target player's graveyard.
• Destroy target artifact.
• Each creature deals 1 damage to its controller.
{3}
Rakdos Keyrune
Artifact
{T}: Add {B} or {R}.
{B}{R}: Rakdos Keyrune becomes a 3/1 black and red Devil artifact creature with first strike until end of turn.
{2}
Rakdos Signet
Artifact
{1}, {T}: Add {B}{R}.
{X}{B}{R}
Rakdos's Return
Sorcery
Rakdos's Return deals X damage to target opponent or planeswalker. That player or that planeswalker's controller discards X cards.
{1}{R}{R}
Repercussion
Enchantment
Whenever a creature is dealt damage, Repercussion deals that much damage to that creature's controller.
{X}{R}{R}
Rolling Thunder
Sorcery
Rolling Thunder deals X damage divided as you choose among any number of targets.
--
Rupture Spire
Land
Rupture Spire enters the battlefield tapped.
When Rupture Spire enters the battlefield, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.
{B}{B}
Sign in Blood
Sorcery
Target player draws two cards and loses 2 life.
{3}{B}{R}
Skull Rend
Sorcery
Skull Rend deals 2 damage to each opponent. Those players each discard two cards at random.
{R}{R}
Smoke
Enchantment
Players can't untap more than one creature during their untap steps.
--
Smoldering Marsh
Land - Swamp Mountain
({T}: Add {B} or {R}.)
Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.
{4}{B}
Spreading Plague
Enchantment
Whenever a creature enters the battlefield, destroy all other creatures that share a color with it. They can't be regenerated.
{X}{R}{R}
Starstorm
Instant
Starstorm deals X damage to each creature.
Cycling {3} ({3}, Discard this card: Draw a card.)
--
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}.)
--
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.
--
Tectonic Edge
Land
{T}: Add {C}.
{1}, {T}, Sacrifice Tectonic Edge: Destroy target nonbasic land. Activate only if an opponent controls four or more lands.
{B}{R}
Terminate
Instant
Destroy target creature. It can't be regenerated.
--
Terramorphic Expanse
Land
{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{1}{B}
Trespasser's Curse
Enchantment - Aura Curse
Enchant player
Whenever a creature enters the battlefield under enchanted player's control, that player loses 1 life and you gain 1 life.
{1}{B}{R}
Unlicensed Disintegration
Instant
Destroy target creature. If you control an artifact, Unlicensed Disintegration deals 3 damage to that creature's controller.
--
Urborg, Tomb of Yawgmoth
Legendary Land
Each land is a Swamp in addition to its other land types.
{4}
Vedalken Orrery
Artifact
You may cast spells as though they had flash.
--
Vivid Marsh
Land
Vivid Marsh enters the battlefield tapped with two charge counters on it.
{T}: Add {B}.
{T}, Remove a charge counter from Vivid Marsh: Add one mana of any color.
{3}{B}{R}
Void
Sorcery
Choose a number. Destroy all artifacts and creatures with mana value equal to that number. Then target player reveals their hand and discards all nonland cards with mana value equal to the number.
{5}{R}{R}
Volcanic Vision
Sorcery
Return target instant or sorcery card from your graveyard to your hand. Volcanic Vision deals damage equal to that card's mana value to each creature your opponents control. Exile Volcanic Vision.
{2}{R}{R}
Wild Ricochet
Instant
You may choose new targets for target instant or sorcery spell. Then copy that spell. You may choose new targets for the copy.
{3}{R}{R}
Word of Seizing
Instant
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Untap target permanent and gain control of it until end of turn. It gains haste until end of turn.
{3}
Worn Powerstone
Artifact
Worn Powerstone enters the battlefield tapped.
{T}: Add {C}{C}.
{5}{B}
Wound Reflection
Enchantment
At the beginning of each end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)