March of the Machine

Sun-Blessed Guardian | Creature | Human Cleric | {5}{R/P}: Transform Sun-Blessed Guardian. Activate only as a sorcery. ({R/P} can be paid with either {R} or 2 life.) | Brian Valeza

Captive Weird | Creature | Weird | Defender {3}{R/P}: Transform Captive Weird. Activate only as a sorcery. ({R/P} can be paid with either {R} or 2 life.) | Manuel Castañón

Fearless Skald | Creature | Dwarf Berserker | Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.) Double strike | Slawomir Maniak

Furnace Gremlin | Creature | Phyrexian Gremlin | {1}{R}: Furnace Gremlin gets +1/+0 until end of turn. When Furnace Gremlin dies, incubate X, where X is its power. (Create an Incubator token with X +1/+1 counters on it and "2: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) | Tuan Duong Chu

Harried Artisan | Creature | Human Artificer | Haste {3}{W/P}: Transform Harried Artisan. Activate only as a sorcery. ({W/P} can be paid with either {W} or 2 life.) | Caio Monteiro

Invasion of Mercadia // Kyren Flamewright | Battle // Creature | Siege // Goblin Spellshaper | (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of Mercadia enters, you may discard a card. If you do, draw two cards. // {2}{R}, {T}, Discard a card: Create two 1/1 blue and red Elemental creature tokens. Creatures you control get +1/+0 and gain haste until end of turn. | Cristi Balanescu

Invasion of Regatha // Disciples of the Inferno | Battle // Creature | Siege // Human Monk | (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of Regatha enters, it deals 4 damage to another target battle or opponent and 1 damage to up to one target creature. // Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) If a noncreature source you control would deal damage to a creature, battle, or opponent, it deals that much damage plus 2 instead. | Daarken

Khenra Spellspear // Gitaxian Spellstalker | Creature // Creature | Jackal Warrior // Phyrexian Jackal | Trample Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) {3}{U/P}: Transform Khenra Spellspear. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.) // Trample, ward {2}, prowess, prowess (Each instance of prowess triggers separately.) | Artur Nakhodkin

Scrappy Bruiser | Creature | Raccoon Warrior | Whenever Scrappy Bruiser attacks, up to one target attacking creature gets +2/+0 and gains trample until end of turn. Return that creature to its owner's hand at end of combat. (Return it only if it's on the battlefield.) | David Auden Nash

Shivan Branch-Burner | Creature | Dragon | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Flying, haste | Aaron Miller

Mirror-Shield Hoplite | Creature | Human Soldier | Vigilance Whenever a creature you control becomes the target of a backup ability, copy that ability. You may choose new targets for the copy. This ability triggers only once each turn. | Alex Brock

Joyful Stormsculptor | Creature | Human Shaman | When Joyful Stormsculptor enters the battlefield, create two 1/1 blue and red Elemental creature tokens. Whenever you cast a spell that has convoke, Joyful Stormsculptor deals 1 damage to each opponent and each battle they protect. | Christina Kraus

Stormclaw Rager | Creature | Ogre Warrior | {1}, Sacrifice another creature or artifact: Put a +1/+1 counter on Stormclaw Rager and draw a card. Activate only as a sorcery. | Nicholas Elias

Rampaging Geoderm | Creature | Dinosaur Beast | Trample, haste Whenever you attack, target attacking creature gets +1/+1 until end of turn. If it's attacking a battle, put a +1/+1 counter on it instead. | Randy Vargas