Sin Collector | Creature | Human Cleric | When Sin Collector enters the battlefield, target opponent reveals their hand. You choose an instant or sorcery card from it and exile that card. | Mike Bierek
Viashino Firstblade | Creature | Viashino Soldier | Haste
When Viashino Firstblade enters the battlefield, it gets +2/+2 until end of turn. | Matt Stewart
Goblin Test Pilot | Creature | Goblin Pilot Wizard | Flying
{T}: Goblin Test Pilot deals 2 damage to any target chosen at random. | Svetlin Velinov
Nivix Cyclops | Creature | Cyclops | Defender
Whenever you cast an instant or sorcery spell, Nivix Cyclops gets +3/+0 until end of turn and can attack this turn as though it didn't have defender. | Wayne Reynolds
Beetleform Mage | Creature | Human Insect Wizard | {G}{U}: Beetleform Mage gets +2/+2 and gains flying until end of turn. Activate only once each turn. | Marco Nelor
Vorel of the Hull Clade | Legendary Creature | Human Merfolk | {G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land. | Mike Bierek
Varolz, the Scar-Striped | Legendary Creature | Troll Warrior | Each creature card in your graveyard has scavenge. The scavenge cost is equal to its mana cost. (Exile a creature card from your graveyard and pay its mana cost: Put a number of +1/+1 counters equal to that card's power on target creature. Scavenge only as a sorcery.)
Sacrifice another creature: Regenerate Varolz, the Scar-Striped. | Adam Paquette
Feral Animist | Creature | Goblin Shaman | {3}: Feral Animist gets +X/+0 until end of turn, where X is its power. | Dave Kendall