Acidic Soil deals damage to each player equal to the number of lands they control.
{1}{R}{R}
Aether Membrane
Creature - Wall
Defender; reach (This creature can block creatures with flying.)
Whenever Aether Membrane blocks a creature, return that creature to its owner's hand at end of combat.
0 /
5
{2}{R}{R}
Aftershock
Sorcery
Destroy target artifact, creature, or land. Aftershock deals 3 damage to you.
{2}{R}
Ancient Runes
Enchantment
At the beginning of each player's upkeep, Ancient Runes deals damage to that player equal to the number of artifacts they control.
{2}
Ankh of Mishra
Artifact
Whenever a land enters the battlefield, Ankh of Mishra deals 2 damage to that land's controller.
{2}{R}
Arcbond
Instant
Choose target creature. Whenever that creature is dealt damage this turn, it deals that much damage to each other creature and each player.
{2}{R}
Auntie Blyte, Bad Influence
Legendary Creature - Devil Advisor
Flying
Whenever a source you control deals damage to you, put that many +1/+1 counters on Auntie Blyte, Bad Influence.
{1}{R}, {T}, Remove X +1/+1 counters from Auntie Blyte: It deals X damage to any target.
2 /
2
--
Barbarian Ring
Land
{T}: Add {R}. Barbarian Ring deals 1 damage to you.
Threshold -- {R}, {T}, Sacrifice Barbarian Ring: It deals 2 damage to any target. Activate only if seven or more cards are in your graveyard.
{1}
Basilisk Collar
Artifact - Equipment
Equipped creature has deathtouch and lifelink.
Equip {2}
{3}{R}
Big Score
Instant
As an additional cost to cast this spell, discard a card.
Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{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.
{4}{R}
Brash Taunter
Creature - Goblin
Indestructible
Whenever Brash Taunter is dealt damage, it deals that much damage to target opponent.
{2}{R}, {T}: Brash Taunter fights another target creature.
1 /
1
{1}{R}
Breath of Darigaaz
Sorcery
Kicker {2} (You may pay an additional {2} as you cast this spell.)
Breath of Darigaaz deals 1 damage to each creature without flying and each player. If this spell was kicked, it deals 4 damage to each creature without flying and each player instead.
{5}{R}
Charmbreaker Devils
Creature - Devil
At the beginning of your upkeep, return an instant or sorcery card at random from your graveyard to your hand.
Whenever you cast an instant or sorcery spell, Charmbreaker Devils gets +4/+0 until end of turn.
4 /
4
{4}{R}{R}
Coalhauler Swine
Creature - Boar Beast
Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.
4 /
4
{2}{R}
Descent into Avernus
Enchantment
At the beginning of your upkeep, put two descent counters on Descent into Avernus. Then each player creates X Treasure tokens and Descent into Avernus deals X damage to each player, where X is the number of descent counters on Descent into Avernus.
{3}{R}
Elemental Mastery
Enchantment - Aura
Enchant creature
Enchanted creature has "{T}: Create X 1/1 red Elemental creature tokens with haste, where X is this creature's power. Exile them at the beginning of the next end step."
{1}
Elixir of Immortality
Artifact
{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.
{3}{R}{R}
Embermaw Hellion
Creature - Hellion
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.
4 /
5
{2}
Fire Diamond
Artifact
Fire Diamond enters the battlefield tapped.
{T}: Add {R}.
{1}{R}
Fireslinger
Creature - Human Wizard
{T}: Fireslinger deals 1 damage to any target and 1 damage to you.
1 /
1
{1}{R}
Flame Rift
Sorcery
Flame Rift deals 4 damage to each player.
{1}{R}{R}
Goblin Artillery
Creature - Goblin Warrior
{T}: Goblin Artillery deals 2 damage to any target and 3 damage to you.
1 /
3
{4}{R}{R}
Hammerfist Giant
Creature - Giant Warrior
{T}: Hammerfist Giant deals 4 damage to each creature without flying and each player.
5 /
4
{2}{R}
Hissing Iguanar
Creature - Lizard
Whenever another creature dies, you may have Hissing Iguanar deal 1 damage to target player or planeswalker.
3 /
1
{R}
Jackal Pup
Creature - Jackal
Whenever Jackal Pup is dealt damage, it deals that much damage to you.
2 /
1
{3}{R}
Lavabrink Floodgates
Artifact
{T}: Add {R}{R}.
At the beginning of each player's upkeep, that player may put a doom counter on Lavabrink Floodgates or remove a doom counter from it. Then if it has three or more doom counters on it, sacrifice Lavabrink Floodgates. When you do, it deals 6 damage to each creature.
--
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}.)
--
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}.)
--
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}.)
{3}
Patriar's Seal
Artifact
{T}: Add one mana of any color.
{1}, {T}: Untap target legendary creature you control.
{2}{R}
Risk Factor
Instant
Target opponent may have Risk Factor deal 4 damage to them. If that player doesn't, you draw three cards.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)
{1}{R}
Roiling Vortex
Enchantment
At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them.
Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player.
{R}: Your opponents can't gain life this turn.
{2}{R}
Rupture
Sorcery
Sacrifice a creature. Rupture deals damage equal to that creature's power to each creature without flying and each player.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{R}
Spear Spewer
Creature - Goblin Warrior
Defender
{T}: Spear Spewer deals 1 damage to each player.
0 /
2
{5}
Stuffy Doll
Artifact Creature - Construct
Indestructible
As Stuffy Doll enters the battlefield, choose a player.
Whenever Stuffy Doll is dealt damage, it deals that much damage to the chosen player.
{T}: Stuffy Doll deals 1 damage to itself.
0 /
1
{1}{R}{R}
Sulfuric Vortex
Enchantment
At the beginning of each player's upkeep, Sulfuric Vortex deals 2 damage to that player.
If a player would gain life, that player gains no life instead.
{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}
{3}
Thousand-Year Elixir
Artifact
You may activate abilities of creatures you control as though those creatures had haste.
{1}, {T}: Untap target creature.
{2}{R}
Tuktuk Rubblefort
Creature - Wall
Defender, reach
Creatures you control have haste.
0 /
3
{2}{R}{ // }{1}{R}
Two-Handed Axe // Sweeping Cleave
Artifact - Equipment // Instant - Adventure
Whenever equipped creature attacks, double its power until end of turn.
Equip {1}{R}
Target creature you control gains double strike until end of turn. (Then exile this card. You may cast the artifact later from exile.)
{2}{R}
Valakut Awakening
Instant
Put any number of cards from your hand on the bottom of your library, then draw that many cards plus one.
--
Valakut Stoneforge
Land
Valakut Stoneforge enters the battlefield tapped.
{T}: Add {R}.
{R}
Vexing Devil
Creature - Devil
When Vexing Devil enters the battlefield, any opponent may have it deal 4 damage to them. If a player does, sacrifice Vexing Devil.
4 /
3
{1}
Wayfarer's Bauble
Artifact
{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
--
Witch's Clinic
Land
{T}: Add {C}.
{2}, {T}: Target commander gains lifelink until end of turn.