Pioneer Masters

Ghirapur Gearcrafter | Creature | Human Artificer | When Ghirapur Gearcrafter enters, create a 1/1 colorless Thopter artifact creature token with flying. (A creature with flying can't be blocked except by creatures with flying or reach.) | Victor Adame Minguez

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

Scab-Clan Berserker | Creature | Human Berserker | Haste Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.) Whenever an opponent casts a noncreature spell, if Scab-Clan Berserker is renowned, Scab-Clan Berserker deals 2 damage to that player. | Dave Kendall

Scytheclaw Raptor | Creature | Dinosaur | Whenever a player casts a spell, if it's not their turn, Scytheclaw Raptor deals 4 damage to them. | John Tedrick

Reckless Bushwhacker | Creature | Goblin Warrior Ally | Surge {1}{R} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) Haste When Reckless Bushwhacker enters, if its surge cost was paid, other creatures you control get +1/+0 and gain haste until end of turn. | Kieran Yanner

Thopter Engineer | Creature | Human Artificer | When Thopter Engineer enters, create a 1/1 colorless Thopter artifact creature token with flying. Artifact creatures you control have haste. (They can attack and {T} as soon as they come under your control.) | Steve Prescott

Anax and Cymede | Legendary Creature | Human Soldier | First strike, vigilance Heroic — Whenever you cast a spell that targets Anax and Cymede, creatures you control get +1/+1 and gain trample until end of turn. | Willian Murai

Boros Reckoner | Creature | Minotaur Wizard | Whenever Boros Reckoner is dealt damage, it deals that much damage to any target. {R/W}: Boros Reckoner gains first strike until end of turn. | Howard Lyon

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