Nightfire Giant | Creature | Zombie Giant | Nightfire Giant gets +1/+1 as long as you control a Mountain.
{4}{R}: Nightfire Giant deals 2 damage to any target. | Dave Kendall
Altac Bloodseeker | Creature | Human Berserker | Whenever a creature an opponent controls dies, Altac Bloodseeker gets +2/+0 and gains first strike and haste until end of turn. (It deals combat damage before creatures without first strike, and it can attack and {T} as soon as it comes under your control.) | Cynthia Sheppard
Belligerent Sliver | Creature | Sliver | Sliver creatures you control have menace. (They can't be blocked except by two or more creatures.) | Raymond Swanland
Borderland Marauder | Creature | Human Warrior | Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn. | Scott M. Fischer
Brood Keeper | Creature | Human Shaman | Whenever an Aura becomes attached to Brood Keeper, create a 2/2 red Dragon creature token with flying. It has "{R}: This creature gets +1/+0 until end of turn." | Scott Murphy
Forge Devil | Creature | Devil | When Forge Devil enters the battlefield, it deals 1 damage to target creature and 1 damage to you. | Austin Hsu
Foundry Street Denizen | Creature | Goblin Warrior | Whenever another red creature enters the battlefield under your control, Foundry Street Denizen gets +1/+0 until end of turn. | Raoul Vitale
Frenzied Goblin | Creature | Goblin Berserker | Whenever Frenzied Goblin attacks, you may pay {R}. If you do, target creature can't block this turn. | Carl Critchlow
Generator Servant | Creature | Elemental | {T}, Sacrifice Generator Servant: Add {C}{C}. If that mana is spent on a creature spell, it gains haste until end of turn. (That creature can attack and {T} as soon as it comes under your control.) | Mathias Kollros
Goblin Kaboomist | Creature | Goblin Warrior | At the beginning of your upkeep, create a colorless artifact token named Land Mine with "{R}, Sacrifice this artifact: This artifact deals 2 damage to target attacking creature without flying." Then flip a coin. If you lose the flip, Goblin Kaboomist deals 2 damage to itself. | Kev Walker
Goblin Rabblemaster | Creature | Goblin Warrior | Other Goblin creatures you control attack each combat if able.
At the beginning of combat on your turn, create a 1/1 red Goblin creature token with haste.
Whenever Goblin Rabblemaster attacks, it gets +1/+0 until end of turn for each other attacking Goblin. | Svetlin Velinov
Goblin Roughrider | Creature | Goblin Knight | | Jesper Ejsing
Hoarding Dragon | Creature | Dragon | Flying
When Hoarding Dragon enters the battlefield, you may search your library for an artifact card, exile it, then shuffle.
When Hoarding Dragon dies, you may put the exiled card into its owner's hand. | Matt Cavotta
Kird Chieftain | Creature | Ape | Kird Chieftain gets +1/+1 as long as you control a Forest.
{4}{G}: Target creature gets +2/+2 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.) | Lars Grant-West
Krenko's Enforcer | Creature | Goblin Warrior | Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) | Karl Kopinski
Kurkesh, Onakke Ancient | Legendary Creature | Ogre Spirit | Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay {R}. If you do, copy that ability. You may choose new targets for the copy. | Slawomir Maniak
Miner's Bane | Creature | Elemental | {2}{R}: Miner's Bane gets +1/+0 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.) | Adam Paquette
Paragon of Fierce Defiance | Creature | Human Warrior | Other red creatures you control get +1/+1.
{R}, {T}: Another target red creature you control gains haste until end of turn. (It can attack and {T} this turn.) | Slawomir Maniak
Rummaging Goblin | Creature | Goblin Rogue | {T}, Discard a card: Draw a card. | Karl Kopinski
Scrapyard Mongrel | Creature | Dog | As long as you control an artifact, Scrapyard Mongrel gets +2/+0 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.) | Svetlin Velinov
Siege Dragon | Creature | Dragon | Flying
When Siege Dragon enters the battlefield, destroy all Walls your opponents control.
Whenever Siege Dragon attacks, if defending player controls no Walls, it deals 2 damage to each creature without flying that player controls. | Karl Kopinski
Soul of Shandalar | Creature | Avatar | First strike
{3}{R}{R}: Soul of Shandalar deals 3 damage to target player or planeswalker and 3 damage to up to one target creature that player or that planeswalker's controller controls.
{3}{R}{R}, Exile Soul of Shandalar from your graveyard: Soul of Shandalar deals 3 damage to target player or planeswalker and 3 damage to up to one target creature that player or that planeswalker's controller controls. | Raymond Swanland
Thundering Giant | Creature | Giant | Haste (This creature can attack and {T} as soon as it comes under your control.) | Mark Zug
Torch Fiend | Creature | Devil | {R}, Sacrifice Torch Fiend: Destroy target artifact. | Winona Nelson
Wall of Fire | Creature | Wall | Defender (This creature can't attack.)
{R}: Wall of Fire gets +1/+0 until end of turn. | Dan Dos Santos
Sliver Hivelord | Legendary Creature | Sliver | Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.) | Aleksi Briclot