March of the Machine

Assimilate Essence | Instant | | Counter target creature or battle spell unless its controller pays {4}. If they do, you 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.) | Konstantin Porubov

Change the Equation | Instant | | Choose one — • Counter target spell with mana value 2 or less. • Counter target red or green spell with mana value 6 or less. | Alix Branwyn

Disturbing Conversion | Enchantment | Aura | Flash Enchant creature When Disturbing Conversion enters the battlefield, each player mills two cards. Enchanted creature gets -X/-0, where X is the number of cards in its controller's graveyard. | Anna Mitura-Laskowska

Expedition Lookout | Creature | Merfolk Rogue | Defender As long as an opponent has eight or more cards in their graveyard, Expedition Lookout can attack as though it didn't have defender and it can't be blocked. | Johan Grenier

Faerie Mastermind | Creature | Faerie Rogue | Flash Flying Whenever an opponent draws their second card each turn, you draw a card. {3}{U}: Each player draws a card. | Joshua Raphael

Moment of Truth | Instant | | Look at the top three cards of your library. Put one of those cards into your hand, one into your graveyard, and one on the bottom of your library. | Rovina Cai

Negate | Instant | | Counter target noncreature spell. | Viko Menezes

Oracle of Tragedy | Creature | Human Wizard | When Oracle of Tragedy enters the battlefield or dies, choose one — • Draw a card, then discard a card. • Shuffle up to four target cards with mana value 3 or greater from your graveyard into your library. | Pavel Kolomeyets

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

Rona, Herald of Invasion // Rona, Tolarian Obliterator | Legendary Creature // Legendary Creature | Human Wizard // Phyrexian Wizard | Whenever you cast a legendary spell, untap Rona, Herald of Invasion. {T}: Draw a card, then discard a card. {5}{B/P}: Transform Rona. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.) // Trample Whenever a source deals damage to Rona, Tolarian Obliterator, that source's controller exiles a card from their hand at random. If it's a land card, you may put it onto the battlefield under your control. Otherwise, you may cast it without paying its mana cost. | Victor Adame Minguez

Saiba Cryptomancer | Creature | Moonfolk Ninja | Flash 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.) Hexproof | Aaron J. Riley

Skyclave Aerialist | Creature | Merfolk Scout | Flying {4}{G/P}: Transform Skyclave Aerialist. Activate only as a sorcery. ({G/P} can be paid with either {G} or 2 life.) | Michal Ivan

Stasis Field | Enchantment | Aura | Enchant creature Enchanted creature has base power and toughness 0/2, has defender, and loses all other abilities. | Jinho Bae

Zhalfirin Shapecraft | Instant | | Target creature has base power and toughness 4/3 until end of turn. Draw a card. | Aldo Domínguez

Aetherblade Agent | Creature | Human Rogue | Deathtouch {4}{U/P}: Transform Aetherblade Agent. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.) | Alexander Mokhov

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

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 Kaladesh | Battle | 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 Kaladesh enters the battlefield, create a 1/1 colorless Thopter artifact creature token with flying. | Leon Tukker

Invasion of Pyrulea | Battle | 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 Pyrulea enters the battlefield, scry 3, then reveal the top card of your library. If it's a land or double-faced card, draw a card. | Nicholas Gregory