
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

Borderland Marauder | Creature | Human Warrior | Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn. | Scott M. Fischer

Circle of Flame | Enchantment | | Whenever a creature without flying attacks you or a planeswalker you control, Circle of Flame deals 1 damage to that creature. | Jaime Jones

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

Inferno Fist | Enchantment | Aura | Enchant creature you control
Enchanted creature gets +2/+0.
{R}, Sacrifice Inferno Fist: Inferno Fist deals 2 damage to any target. | James Ryman

Lightning Strike | Instant | | Lightning Strike deals 3 damage to any target. | Adam Paquette

Shrapnel Blast | Instant | | As an additional cost to cast this spell, sacrifice an artifact.
Shrapnel Blast deals 5 damage to any target. | Hideaki Takamura

Torch Fiend | Creature | Devil | {R}, Sacrifice Torch Fiend: Destroy target artifact. | Winona Nelson