The Brothers' War

Aeronaut Cavalry | Creature | Human Soldier | Flying When Aeronaut Cavalry enters the battlefield, put a +1/+1 counter on another target Soldier you control. | Lorenzo Mastroianni

Desynchronize | Instant | | Target nonland permanent's owner puts it on the top or bottom of their library. Scry 2. | Rovina Cai

Koilos Roc | Creature | Bird | Flash Flying When Koilos Roc enters the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Antonio José Manzanedo

Overwhelming Remorse | Instant | | This spell costs {1} less to cast for each creature card in your graveyard. Exile target creature or planeswalker. | Ryan Valle

Trench Stalker | Creature | Beast Horror | As long as you've drawn two or more cards this turn, Trench Stalker has deathtouch and lifelink. | Nino Vecia

Unleash Shell | Instant | | Unleash Shell deals 5 damage to target creature or planeswalker and 2 damage to that permanent's controller. | Campbell White

Tocasia's Onulet | Artifact Creature | Construct | When Tocasia's Onulet leaves the battlefield, you gain 2 life. Unearth {3}{W} ({3}{W}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Eddie Mendoza

Mishra's Juggernaut | Artifact Creature | Juggernaut | Trample Mishra's Juggernaut attacks each combat if able. Unearth {5}{R} ({5}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.) | Steve Prescott

Power Plant Worker | Artifact Creature | Assembly-Worker | {3}: Power Plant Worker gets +2/+2 until end of turn. If you control creatures named Mine Worker and Tower Worker, put two +1/+1 counters on Power Plant Worker instead. Activate only once each turn. | Aaron Miller

Swiftgear Drake | Artifact Creature | Drake | Flying, haste When Swiftgear Drake enters the battlefield, put up to one target card from a graveyard on the bottom of its owner's library. | Zoltan Boros