Act of Treason

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.)

Shivan Dragon

Flying
{R}: This creature gets +1/+0 until end of turn.

Enrage

Target creature gets +X/+0 until end of turn.

Shatter

Lightning Strike

Lightning Strike deals 3 damage to any target.

Savage Firecat

Trample
This creature enters with seven +1/+1 counters on it.
Whenever you tap a land for mana, remove a +1/+1 counter from this creature.

Fever Charm

Choose one —
• Target creature gains haste until end of turn.
• Target creature gets +2/+0 until end of turn.
• Fever Charm deals 3 damage to target Wizard creature.

Mountain

Lightning Talons

Enchant creature
Enchanted creature gets +3/+0 and has first strike. (It deals combat damage before creatures without first strike.)

Cave Sense

Enchant creature
Enchanted creature gets +1/+1 and has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)

Messenger's Speed

Enchant creature
Enchanted creature has trample and haste.

Demolish

Reckless Charge

Target creature gets +3/+0 and gains haste until end of turn.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Volcanic Strength

Enchant creature
Enchanted creature gets +2/+2 and has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)

Tephraderm

Whenever a creature deals damage to this creature, this creature deals that much damage to that creature.
Whenever a spell deals damage to this creature, this creature deals that much damage to that spell's controller.

Rites of Initiation

Discard any number of cards at random. Creatures you control get +1/+0 until end of turn for each card discarded this way.

Mogg Salvage

If an opponent controls an Island and you control a Mountain, you may cast this spell without paying its mana cost.
Destroy target artifact.

Trumpet Blast

Attacking creatures get +2/+0 until end of turn.

Flame Burst

Flame Burst deals X damage to any target, where X is 2 plus the number of cards named Flame Burst in all graveyards.

Fanatic of Mogis

When this creature enters, it deals damage to each opponent equal to your devotion to red. (Each {R} in the mana costs of permanents you control counts toward your devotion to red.)

Reckless Brute

Haste (This creature can attack and {T} as soon as it comes under your control.)
This creature attacks each combat if able.

Dreadhorde Arcanist

Trample
Whenever this creature attacks, you may cast target instant or sorcery card with mana value less than or equal to this creature's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

Tibalt, Rakish Instigator

Your opponents can't gain life.
−2: Create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target."

Trained Orgg

Guerrilla Tactics

Guerrilla Tactics deals 2 damage to any target.
When a spell or ability an opponent controls causes you to discard this card, it deals 4 damage to any target.

Anaba Shaman

{R}, {T}: This creature deals 1 damage to any target.

Marauding Maulhorn

This creature attacks each combat if able unless you control a creature named Advocate of the Beast.

Goblin War Drums

Creatures you control have menace. (They can't be blocked except by two or more creatures.)

Volcanic Hammer

Volcanic Hammer deals 3 damage to any target.

Seething Song

Dragon Hatchling

Shiv's Embrace

Enchant creature
Enchanted creature gets +2/+2 and has flying.
{R}: Enchanted creature gets +1/+0 until end of turn.

Heartless Hidetsugu

{T}: Heartless Hidetsugu deals damage to each player equal to half that player's life total, rounded down.

Quest for Pure Flame

Whenever a source you control deals damage to an opponent, you may put a quest counter on this enchantment.
Remove four quest counters from this enchantment and sacrifice it: If any source you control would deal damage to a permanent or player this turn, it deals double that damage to that permanent or player instead.

Jaya, Venerated Firemage

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.
−2: Jaya deals 2 damage to any target.

Smelt

Dragon Breath

Enchant creature
Enchanted creature has haste.
{R}: Enchanted creature gets +1/+0 until end of turn.
When a creature with mana value 6 or greater enters, you may return this card from your graveyard to the battlefield attached to that creature.

Giant Strength

Enchant creature
Enchanted creature gets +2/+2.

Scattershot

Scattershot deals 1 damage to target creature.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Forgotten Cave

This land enters tapped.
{T}: Add {R}.
Cycling {R} ({R}, Discard this card: Draw a card.)

Mardu Scout

Dash {1}{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.)

Laccolith Rig

Enchant creature
Whenever enchanted creature becomes blocked, you may have it deal damage equal to its power to target creature. If you do, the first creature assigns no combat damage this turn.

Bladetusk Boar

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Slice and Dice

Slice and Dice deals 4 damage to each creature.
Cycling {2}{R} ({2}{R}, Discard this card: Draw a card.)
When you cycle this card, you may have it deal 1 damage to each creature.

Extra Arms

Enchant creature
Whenever enchanted creature attacks, it deals 2 damage to any target.

Chandra's Outrage

Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller.

Sulfuric Vortex

At the beginning of each player's upkeep, this enchantment deals 2 damage to that player.
If a player would gain life, that player gains no life instead.

Laccolith Grunt

Whenever this creature becomes blocked, you may have it deal damage equal to its power to target creature. If you do, this creature assigns no combat damage this turn.

Staff of the Flame Magus

Whenever you cast a red spell or a Mountain you control enters, you gain 1 life.

Fire Elemental

Goblin Battle Jester

Whenever you cast a red spell, target creature can't block this turn.

Dictate of the Twin Gods

Flash
If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Volcanic Geyser

Volcanic Geyser deals X damage to any target.

Thundering Giant

Haste (This creature can attack and {T} as soon as it comes under your control.)

Snapping Thragg

Whenever this creature deals combat damage to a player, you may have it deal 3 damage to target creature that player controls.
Morph {4}{R}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Orcish Spy

{T}: Look at the top three cards of target player's library.

Spellgorger Weird

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Shock

Crown of Fury

Enchant creature
Enchanted creature gets +1/+0 and has first strike.
Sacrifice this Aura: Enchanted creature and other creatures that share a creature type with it get +1/+0 and gain first strike until end of turn.

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Accorder's Shield

Equipped creature gets +0/+3 and has vigilance. (Attacking doesn't cause it to tap.)
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

Pardic Firecat

Haste
If this card is in a graveyard, effects from spells named Flame Burst count it as a card named Flame Burst.

Violent Eruption

Violent Eruption deals 4 damage divided as you choose among any number of targets.
Madness {1}{R}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Thunder Strike

Target creature gets +2/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Torrent of Fire

Torrent of Fire deals damage to any target equal to the greatest mana value among permanents you control.