The Brothers' War

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

Great Desert Prospector | Creature | Human Artificer | When Great Desert Prospector enters the battlefield, create a tapped Powerstone token for each other creature you control. (The tokens are artifacts with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Nestor Ossandon Leal

Lay Down Arms | Sorcery | | Exile target creature with mana value less than or equal to the number of Plains you control. Its controller gains 3 life. | Liiga Smilshkalne

Loran, Disciple of History | Legendary Creature | Human Artificer | Whenever Loran, Disciple of History or another legendary creature enters the battlefield under your control, return target artifact card from your graveyard to your hand. | Cristi Balanescu

Mass Production | Sorcery | | Create four 1/1 colorless Soldier artifact creature tokens. | Rémi Jacquot

Meticulous Excavation | Enchantment | | {2}{W}: Return target permanent you control to its owner's hand. If it has unearth, instead exile it, then return that card to its owner's hand. Activate only during your turn. | Lucas Graciano

Recruitment Officer | Creature | Human Soldier | {3}{W}: Look at the top four cards of your library. You may reveal a creature card with mana value 3 or less from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Johan Grenier

Repair and Recharge | Sorcery | | Return target artifact, enchantment, or planeswalker card from your graveyard to 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.") | Ben Wootten

Static Net | Enchantment | | When Static Net enters the battlefield, exile target nonland permanent an opponent controls until Static Net leaves the battlefield. When Static Net enters the battlefield, you gain 2 life and create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Josh Hass

Thopter Architect | Creature | Human Artificer | Whenever an artifact enters the battlefield under your control, target creature gains flying until end of turn. | Michal Ivan

Yotian Tactician | Creature | Human Soldier | Other Soldiers you control get +1/+1. | Fariba Khamseh

Hero of the Dunes | Creature | Human Soldier | When Hero of the Dunes enters the battlefield, return target artifact or creature card with mana value 3 or less from your graveyard to the battlefield. Creatures you control with mana value 3 or less get +1/+0. | Taras Susak

Fallaji Vanguard | Creature | Human Soldier | First strike Whenever Fallaji Vanguard or another creature enters the battlefield under your control, target creature gets +2/+0 until end of turn. | Joshua Cairos

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

Combat Thresher | Artifact Creature | Construct | Prototype {2}{W} — 1/1 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Double strike When Combat Thresher enters the battlefield, draw a card. | Victor Harmatiuk

Yotian Frontliner | Artifact Creature | Soldier | Whenever Yotian Frontliner attacks, another target creature you control gets +1/+1 until end of turn. Unearth {W} ({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.) | Jehan Choo