Foundations

Crackling Cyclops | Creature | Cyclops Wizard | Whenever you cast a noncreature spell, this creature gets +3/+0 until end of turn. | Kev Walker

Goblin Boarders | Creature | Goblin Pirate | Raid — This creature enters with a +1/+1 counter on it if you attacked this turn. | Filipe Pagliuso

Brazen Scourge | Creature | Gremlin | Haste | Kev Walker

Firespitter Whelp | Creature | Dragon | Flying Whenever you cast a noncreature or Dragon spell, Firespitter Whelp deals 1 damage to each opponent. | David Álvarez

Flamewake Phoenix | Creature | Phoenix | Flying, haste Flamewake Phoenix attacks each combat if able. Ferocious — At the beginning of combat on your turn, if you control a creature with power 4 or greater, you may pay {R}. If you do, return Flamewake Phoenix from your graveyard to the battlefield. | Min Yum

Ball Lightning | Creature | Elemental | Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) Haste (This creature can attack and {T} as soon as it comes under your control.) At the beginning of the end step, sacrifice this creature. | Trevor Claxton

Dropkick Bomber | Creature | Goblin Warrior | Other Goblins you control get +1/+1. {R}: Until end of turn, another target Goblin you control gains flying and "When this creature deals combat damage, sacrifice it." | Quintin Gleim

Alesha, Who Laughs at Fate | Legendary Creature | Human Warrior | First strike Whenever Alesha attacks, put a +1/+1 counter on it. Raid — At the beginning of your end step, if you attacked this turn, return target creature card with mana value less than or equal to Alesha's power from your graveyard to the battlefield. | Ekaterina Burmak

Perforating Artist | Creature | Devil | Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) Raid — At the beginning of your end step, if you attacked this turn, each opponent loses 3 life unless that player sacrifices a nonland permanent of their choice or discards a card. | Arif Wijaya