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)

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

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