The Brothers' War

Argothian Opportunist | Creature | Human Scout | When Argothian Opportunist 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.") | Ina Wong

Argothian Sprite | Creature | Faerie | Argothian Sprite can't be blocked by artifact creatures. {7}: Put two +1/+1 counters on Argothian Sprite. | Rudy Siswanto

Blanchwood Prowler | Creature | Elemental | When Blanchwood Prowler enters the battlefield, mill three cards. You may put a land card from among the cards milled this way into your hand. If you don't, put a +1/+1 counter on Blanchwood Prowler. (To mill a card, put the top card of your library into your graveyard.) | Justine Cruz

Burrowing Razormaw | Creature | Beast | When Burrowing Razormaw dies, mill four cards. (Put the top four cards of your library into your graveyard.) | Uriah Voth

Citanul Stalwart | Creature | Elf Druid Soldier | {T}, Tap an untapped artifact or creature you control: Add one mana of any color. | Alexandr Leskinen

Gnarlroot Pallbearer | Creature | Treefolk Druid | Trample When Gnarlroot Pallbearer enters the battlefield, target creature gets +X/+X until end of turn, where X is the number of creature cards in your graveyard. | Nino Is

Hoarding Recluse | Creature | Spider | Reach, deathtouch When Hoarding Recluse dies, put up to one other target card from a graveyard on the bottom of its owner's library. | Jorge Jacinto

Perimeter Patrol | Creature | Human Soldier | Whenever an artifact enters the battlefield under your control, Perimeter Patrol gets +1/+0 until end of turn. | Edgar Sánchez Hidalgo

Tomakul Honor Guard | Creature | Human Soldier | Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) | Francisco Miyara

Boulderbranch Golem | Artifact Creature | Golem | Prototype {3}{G} — 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) When Boulderbranch Golem enters the battlefield, you gain life equal to its power. | Dan Scott

Rust Goliath | Artifact Creature | Construct | Prototype {3}{G}{G} — 3/5 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Reach, trample | Nicholas Gregory