The Brothers' War

Ambush Paratrooper | Creature | Human Soldier | Flash Flying {5}: Creatures you control get +1/+1 until end of turn. | Vladimir Krisetskiy

Calamity's Wake | Instant | | Exile all graveyards. Players can't cast noncreature spells this turn. Exile Calamity's Wake. | Slawomir Maniak

Deadly Riposte | Instant | | Deadly Riposte deals 3 damage to target tapped creature and you gain 2 life. | Olena Richards

Disenchant | Instant | | Destroy target artifact or enchantment. | Richard Kane Ferguson

Phalanx Vanguard | Creature | Human Soldier | Vigilance Whenever an artifact enters the battlefield under your control, Phalanx Vanguard gets +1/+0 until end of turn. | Izzy

Powerstone Engineer | Creature | Human Artificer | When Powerstone Engineer dies, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Dan Scott

Recommission | Sorcery | | Return target artifact or creature card with mana value 3 or less from your graveyard to the battlefield. If a creature enters the battlefield this way, it enters with an additional +1/+1 counter on it. | Andrew Mar

Soul Partition | Instant | | Exile target nonland permanent. For as long as that card remains exiled, its owner may play it. A spell cast by an opponent this way costs {2} more to cast. | Kekai Kotaki

Harbin, Vanguard Aviator | Legendary Creature | Human Soldier | Flying Whenever you attack with five or more Soldiers, creatures you control get +1/+1 and gain flying until end of turn. | Kieran Yanner

Yotian Dissident | Creature | Human Artificer | Whenever an artifact enters the battlefield under your control, put a +1/+1 counter on target creature you control. | Steve Prescott