Foundations

Courageous Goblin | Creature | Goblin | Whenever this creature attacks while you control a creature with power 4 or greater, this creature gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures.) | Ben Wootten

Searslicer Goblin | Creature | Goblin Warrior | Raid — At the beginning of your end step, if you attacked this turn, create a 1/1 red Goblin creature token. | Wayne Reynolds

Slumbering Cerberus | Creature | Dog | This creature doesn't untap during your untap step. Morbid — At the beginning of each end step, if a creature died this turn, untap this creature. | Kari Christensen

Axgard Cavalry | Creature | Dwarf Berserker | {T}: Target creature gains haste until end of turn. | Evyn Fong

Firebrand Archer | Creature | Human Archer | Whenever you cast a noncreature spell, Firebrand Archer deals 1 damage to each opponent. | John Stanko

Heartfire Immolator | Creature | Human Wizard | Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) {R}, Sacrifice Heartfire Immolator: It deals damage equal to its power to target creature or planeswalker. | Donato Giancola

Swiftblade Vindicator | Creature | Human Soldier | Double strike, vigilance, trample | Viktor Titov

Balmor, Battlemage Captain | Legendary Creature | Bird Wizard | Flying Whenever you cast an instant or sorcery spell, creatures you control get +1/+0 and gain trample until end of turn. | Bram Sels

Ruby, Daring Tracker | Legendary Creature | Human Scout | Haste Whenever Ruby, Daring Tracker attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn. {T}: Add {R} or {G}. | Ekaterina Burmak