The Brothers' War

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

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

Involuntary Cooldown | Sorcery | | Tap up to two target artifacts and/or creatures. Put two stun counters on each of them. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Eelis Kyttanen

Take Flight | Enchantment | Aura | Enchant creature Enchanted creature gets +1/+0 and has flying and "Whenever this creature attacks, draw a card." | Joshua Cairos

Arms Race | Enchantment | | {3}{R}: You may put an artifact card from your hand onto the battlefield. That artifact gains haste. Sacrifice it at the beginning of the next end step. | Leesha Hannigan

Pyrrhic Blast | Instant | | As an additional cost to cast this spell, sacrifice a creature. Pyrrhic Blast deals damage equal to the sacrificed creature's power to any target. Draw a card. | Raf Kayupov

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

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

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

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

Slagstone Refinery | Artifact | | Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from 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.") | Victor Harmatiuk

Symmetry Matrix | Artifact | | Whenever a creature with power equal to its toughness enters the battlefield under your control, you may pay {1}. If you do, draw a card. | Slawomir Maniak