The Brothers' War

Alloy Animist | Creature | Human Druid | {2}{G}: Until end of turn, target noncreature artifact you control becomes a 4/4 artifact creature. | Kim Sokol

Gaea's Courser | Creature | Centaur Soldier | Whenever Gaea's Courser attacks, if there are three or more creature cards in your graveyard, draw a card. | Michele Giorgi

Obstinate Baloth | Creature | Beast | When Obstinate Baloth enters the battlefield, you gain 4 life. If a spell or ability an opponent controls causes you to discard Obstinate Baloth, put it onto the battlefield instead of putting it into your graveyard. | Chris Rahn

Sarinth Steelseeker | Creature | Human Artificer Scout | Whenever an artifact enters the battlefield under your control, look at the top card of your library. If it's a land card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard. | Olivier Bernard

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

Battery Bearer | Creature | Human Artificer | Creatures you control have "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell." Whenever you cast an artifact spell with mana value 6 or greater, draw a card. | Edgar Sánchez Hidalgo

Skyfisher Spider | Creature | Spider | Reach When Skyfisher Spider enters the battlefield, you may sacrifice another creature. When you do, destroy target nonland permanent. When Skyfisher Spider dies, you may gain 1 life for each creature card in your graveyard. If you do, exile Skyfisher Spider from your graveyard. | Henry Peters

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

Cradle Clearcutter | Artifact Creature | Golem | Prototype {2}{G} - 1/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) {T}: Add an amount of {G} equal to Cradle Clearcutter's power. | Daarken

Haywire Mite | Artifact Creature | Insect | When Haywire Mite dies, you gain 2 life. {G}, Sacrifice Haywire Mite: Exile target noncreature artifact or noncreature enchantment. | Izzy

Iron-Craw Crusher | Artifact Creature | Wurm | Prototype {2}{G}{G} — 2/5 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Whenever Iron-Craw Crusher attacks, target attacking creature gets +X/+0 until end of turn, where X is Iron-Craw Crusher's power. | Filip Burburan