The Brothers' War

Conscripted Infantry | Creature | Human Soldier | When Conscripted Infantry dies, create a 1/1 colorless Soldier artifact creature token. | Noah Thatcher

Giant Cindermaw | Creature | Dinosaur Beast | Trample Players can't gain life. | Edgar Sánchez Hidalgo

Mishra, Excavation Prodigy | Legendary Creature | Human Artificer | Haste {1}, {T}, Discard a card: Draw a card. Whenever you discard one or more artifact cards, add {R}{R}. This ability triggers only once each turn. | Donato Giancola

Penregon Strongbull | Creature | Minotaur | {1}, Sacrifice an artifact: Penregon Strongbull gets +1/+1 until end of turn and deals 1 damage to each opponent. | Michael Phillippi

Tomakul Scrapsmith | Creature | Human Artificer | When Tomakul Scrapsmith enters the battlefield, mill three cards. You may put an artifact card from among the cards milled this way into your hand. If you don't, put a +1/+1 counter on Tomakul Scrapsmith. (To mill a card, put the top card of your library into your graveyard.) | Caio Monteiro

Queen Kayla bin-Kroog | Legendary Creature | Human Noble | {4}, {T}: Discard all the cards in your hand, then draw that many cards. You may choose an artifact or creature card with mana value 1 you discarded this way, then do the same for artifact or creature cards with mana values 2 and 3. Return those cards to the battlefield. Activate only as a sorcery. | Cristi Balanescu

Junkyard Genius | Creature | Human Artificer | When Junkyard Genius 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.") {1}{B}{R}, Sacrifice another creature or artifact: Until end of turn, other creatures you control get +1/+0 and gain menace and haste. | Rémi Jacquot

Arbalest Engineers | Creature | Human Artificer | When Arbalest Engineers enters the battlefield, choose one — • Arbalest Engineers deals 1 damage to any target. • Put a +1/+1 counter on target creature. It gains trample and haste until end of turn. • Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Marta Nael

Phyrexian Dragon Engine | Artifact Creature | Phyrexian Dragon | Double strike When Phyrexian Dragon Engine enters the battlefield from your graveyard, you may discard your hand. If you do, draw three cards. Unearth {3}{R}{R} (Melds with Mishra, Claimed by Gix.) | Chris Rahn