March of the Machine

Invasion of Belenon | 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 Belenon enters the battlefield, create a 2/2 white and blue Knight creature token with vigilance. | Antonio José Manzanedo

Invasion of Dominaria | 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 Dominaria enters the battlefield, you gain 4 life and draw a card. | Denys Tsiperko

Phyrexian Awakening | Enchantment | | When Phyrexian Awakening enters the battlefield, incubate 4. (Create an Incubator token with four +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) Phyrexians you control have vigilance. | Artur Nakhodkin

Phyrexian Censor | Creature | Phyrexian Wizard | Each player can't cast more than one non-Phyrexian spell each turn. Non-Phyrexian creatures enter the battlefield tapped. | Alexey Kruglov

Seal from Existence | Enchantment | | Ward {3} (Whenever this enchantment becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) When Seal from Existence enters the battlefield, exile target nonland permanent an opponent controls until Seal from Existence leaves the battlefield. | Anato Finnstark

Seraph of New Capenna | Creature | Angel Soldier | Flying {4}{B/P}: Transform Seraph of New Capenna. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.) | Aaron J. Riley

Zhalfirin Lancer | Creature | Human Knight | Whenever another Knight enters the battlefield under your control, Zhalfirin Lancer gets +1/+1 and gains vigilance until end of turn. | Nino Vecia

Xerex Strobe-Knight | Creature | Human Knight | Flying, vigilance {T}: Create a 2/2 white and blue Knight creature token with vigilance. Activate only if you've cast two or more spells this turn. | Pavel Kolomeyets

Collective Nightmare | 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 -3/-3 until end of turn. | Rovina Cai

Compleated Huntmaster | Creature | Phyrexian Elf Warrior | {1}, {T}, Sacrifice another creature or artifact: Incubate 3. (Create an Incubator token with three +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) | Alex Brock

Glistening Deluge | Sorcery | | All creatures get -1/-1 until end of turn. Creatures that are green and/or white get an additional -2/-2 until end of turn. | Anastasia Balakchina

Render Inert | Sorcery | | Remove up to five counters from target permanent. Draw a card. | Yigit Koroglu

Furnace Reins | Sorcery | | Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat damage to a player or battle, create a Treasure token." (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | Brian Valeza

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 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

Kami of Whispered Hopes | Creature | Spirit | If one or more +1/+1 counters would be put on a permanent you control, that many plus one +1/+1 counters are put on that permanent instead. {T}: Add X mana of any one color, where X is Kami of Whispered Hopes's power. | Filipe Pagliuso

Sandstalker Moloch | Creature | Lizard | Flash When Sandstalker Moloch enters the battlefield, if an opponent cast a blue and/or black spell this turn, look at the top four cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Donato Giancola

Tandem Takedown | Instant | | Up to two target creatures you control each get +1/+0 until end of turn. They each deal damage equal to their power to another target creature, planeswalker, or battle. | Yigit Koroglu

Halo Forager | Creature | Faerie Rogue | Flying When Halo Forager enters the battlefield, you may pay {X}. When you do, you may cast target instant or sorcery card with mana value X from a graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead. | Kevin Sidharta

Invasion of Amonkhet | 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 Amonkhet enters the battlefield, each player mills three cards, then each opponent discards a card and you draw a card. (To mill three cards, a plaver buts the top three cards of their library into their graveyard.) | Jokubas Uogintas

Mutagen Connoisseur | Creature | Vedalken Mutant | Flying, vigilance Mutagen Connoisseur gets +1/+0 for each transformed permanent you control. | Alex Brock

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

Elvish Vatkeeper | Creature | Phyrexian Elf | When Elvish Vatkeeper 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.) {5}: Transform target Incubator token you control. Double the number of +1/+1 counters on it. | Nicholas Gregory