March of the Machine

Aerial Boost | Instant | | 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.) Target creature gets +2/+2 and gains flying until end of turn. | Artur Nakhodkin

Alabaster Host Sanctifier | Creature | Phyrexian Cleric | Lifelink | Konstantin Porubov

Angelic Intervention | Instant | | Target creature or planeswalker you control gains protection from colorless or from the color of your choice until end of turn. If it's a creature, put a +1/+1 counter on it. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything with that quality.) | Awanqi (Angela Wang)

Dusk Legion Duelist | Creature | Vampire Soldier | Vigilance Whenever one or more +1/+1 counters are put on Dusk Legion Duelist, draw a card. This ability triggers only once each turn. | Ryan Valle

Invasion of Gobakhan // Lightshield Array | Battle // Enchantment | Siege // | (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 Gobakhan enters, look at target opponent's hand. You may exile a nonland card from it. For as long as that card remains exiled, its owner may play it. A spell cast this way costs {2} more to cast. // At the beginning of your end step, put a +1/+1 counter on each creature that attacked this turn. Sacrifice Lightshield Array: Creatures you control gain hexproof and indestructible until end of turn. | Andreas Zafiratos

Norn's Inquisitor | Creature | Phyrexian Knight | When Norn's Inquisitor enters the battlefield, incubate 2. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) Whenever a permanent you control transforms into a Phyrexian, put a +1/+1 counter on it. | Denis Zhbankov

Realmbreaker's Grasp | Enchantment | Aura | Enchant artifact or creature Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities. | Artur Nakhodkin

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

Sunder the Gateway | Sorcery | | Choose one — • Destroy target nontoken artifact or enchantment an opponent controls. Incubate 2. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) • Incubate 2, then transform an Incubator token you control. | Titus Lunter

Swordsworn Cavalier | Creature | Human Knight | Swordsworn Cavalier has first strike as long as another Knight entered the battlefield under your control this turn. | Stella Spente

Order of the Mirror | Creature | Human Knight | {3}{W/P}: Transform Order of the Mirror. Activate only as a sorcery. ({W/P} can be paid with either {W} or 2 life.) | Andrew Mar

Invasion of New Phyrexia // Teferi Akosa of Zhalfir | Battle // Legendary Planeswalker | Siege // Teferi | (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 New Phyrexia enters, create X 2/2 white and blue Knight creature tokens with vigilance. // +1: Draw two cards. Then discard two cards unless you discard a creature card. −2: You get an emblem with "Knights you control get +1/+0 and have ward {1}." −3: Tap any number of untapped creatures you control. When you do, shuffle target nonland permanent an opponent controls with mana value X or less into its owner's library, where X is the number of creatures tapped this way. | Chris Rallis

Marshal of Zhalfir | Creature | Human Knight | Other Knights you control get +1/+1. {W}{U}, {T}: Tap another target creature. | Darren Tan

Invasion of New Capenna // Holy Frazzle-Cannon | Battle // Artifact | Siege // Equipment | (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 New Capenna enters, you may sacrifice an artifact or creature. When you do, exile target artifact or creature an opponent controls. // Whenever equipped creature attacks, put a +1/+1 counter on that creature and each other creature you control that shares a creature type with it. Equip {1} | Diego Gisbert

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

Botanical Brawler | Creature | Elemental Warrior | Trample Botanical Brawler enters the battlefield with two +1/+1 counters on it. Whenever one or more +1/+1 counters are put on another permanent you control, if it's the first time +1/+1 counters have been put on that permanent this turn, put a +1/+1 counter on Botanical Brawler. | Jesper Ejsing