Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)
{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.)
{2}{R}
Browbeat
Sorcery
Any player may have Browbeat deal 5 damage to them. If no one does, target player draws three cards.
{R}
Burst Lightning
Instant
Kicker {4} (You may pay an additional {4} as you cast this spell.)
Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage instead.
{2}{R}
Carbonize
Instant
Carbonize deals 3 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}{R}
Chain of Plasma
Instant
Chain of Plasma deals 3 damage to any target. Then that player or that permanent's controller may discard a card. If the player does, they may copy this spell and may choose a new target for that copy.
{1}{R}
Curse of the Pierced Heart
Enchantment - Aura Curse
Enchant player
At the beginning of enchanted player's upkeep, Curse of the Pierced Heart deals 1 damage to that player or a planeswalker that player controls.
{1}{R}
Custody Battle
Enchantment - Aura
Enchant creature
Enchanted creature has "At the beginning of your upkeep, target opponent gains control of this creature unless you sacrifice a land."
{2}
Dragon's Claw
Artifact
Whenever a player casts a red spell, you may gain 1 life.
{1}{R}
Incinerate
Instant
Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.
{R}
Lightning Axe
Instant
As an additional cost to cast this spell, discard a card or pay {5}.
Lightning Axe deals 5 damage to target creature.
{R}
Lightning Berserker
Creature - Human Berserker
{R}: Lightning Berserker gets +1/+0 until end of turn.
Dash {R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)
1 /
1
{R}
Lightning Bolt
Instant
Lightning Bolt deals 3 damage to any target.
{1}{R}
Lightning Strike
Instant
Lightning Strike deals 3 damage to any target.
{1}{R}
Magma Jet
Instant
Magma Jet deals 2 damage to any target. Scry 2.
{R}
Monastery Swiftspear
Creature - Human Monk
Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
1 /
2
--
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}.)
{1}
Prism Ring
Artifact
As Prism Ring enters the battlefield, choose a color.
Whenever you cast a spell of the chosen color, you gain 1 life.
{1}{R}
Pyromatics
Instant
Replicate {1}{R} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)
Pyromatics deals 1 damage to any target.
{2}{R}
Rhystic Lightning
Instant
Rhystic Lightning deals 4 damage to any target unless that permanent's controller or that player pays {2}. If they do, Rhystic Lightning deals 2 damage to the permanent or player.
{R}{R}
Searing Blaze
Instant
Searing Blaze deals 1 damage to target player or planeswalker and 1 damage to target creature that player or that planeswalker's controller controls.
Landfall -- If you had a land enter the battlefield under your control this turn, Searing Blaze deals 3 damage to that player or planeswalker and 3 damage to that creature instead.
{R}{R}
Searing Blood
Instant
Searing Blood deals 2 damage to target creature. When that creature dies this turn, Searing Blood deals 3 damage to the creature's controller.
{R}
Shock
Instant
Shock deals 2 damage to any target.
{2}
Shrine of Burning Rage
Artifact
At the beginning of your upkeep or whenever you cast a red spell, put a charge counter on Shrine of Burning Rage.
{3}, {T}, Sacrifice Shrine of Burning Rage: It deals damage equal to the number of charge counters on it to any target.
{3}
Staff of the Flame Magus
Artifact
Whenever you cast a red spell or a Mountain enters the battlefield under your control, you gain 1 life.
{2}{R}
Threaten
Sorcery
Untap target creature and gain control of it until end of turn. That creature gains haste until end of turn. (It can attack and {T} this turn.)
{1}{R}{R}
Traitorous Blood
Sorcery
Gain control of target creature until end of turn. Untap it. It gains trample and haste until end of turn.
{1}{R}
Zektar Shrine Expedition
Enchantment
Landfall -- Whenever a land enters the battlefield under your control, you may put a quest counter on Zektar Shrine Expedition.
Remove three quest counters from Zektar Shrine Expedition and sacrifice it: Create a 7/1 red Elemental creature token with trample and haste. Exile it at the beginning of the next end step.
{1}{R}
Ashling the Pilgrim
Legendary Creature - Elemental Shaman
{1}{R}: Put a +1/+1 counter on Ashling the Pilgrim. If this is the third time this ability has resolved this turn, remove all +1/+1 counters from Ashling the Pilgrim, and it deals that much damage to each creature and each player.