March of the Machine

Artistic Refusal | 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.) Choose one or both — • Counter target spell. • Draw two cards, then discard a card. | Olivier Bernard

Astral Wingspan | Enchantment | Aura | 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.) Enchant creature When Astral Wingspan enters the battlefield, draw a card. Enchanted creature gets +2/+2 and has flying. | Joseph Weston

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

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

Corruption of Towashi | Enchantment | | When Corruption of Towashi 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.) Whenever a permanent you control transforms or a permanent enters the battlefield under your control transformed, you may draw a card. Do this only once each turn. | Artur Nakhodkin

Invasion of Kamigawa | 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 Kamigawa enters the battlefield, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Kekai Kotaki

Invasion of Vryn | 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 Vryn enters the battlefield, draw three cards, then discard a card. | Leon Tukker

Omen Hawker | Creature | Cephalid Advisor | {T}: Add {C}{U}. Spend this mana only to activate abilities. | Josh Hass

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

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

Wicked Slumber | 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.) Tap up to two target creatures. Put a stun counter on either of them. Then put a stun counter on either of them. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Anato Finnstark

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

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

Gnottvold Hermit | Creature | Troll | {5}{U/P}: Transform Gnottvold Hermit. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.) | Artur Nakhodkin

Invasion of Xerex | 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 Xerex enters the battlefield, return up to one target creature to its owner's hand. | Fajareka Setiawan

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

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 // Lazotep Convert | Battle // Creature | Siege // Zombie | (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 this Siege enters, each player mills three cards, then each opponent discards a card and you draw a card. (To mill three cards, a player puts the top three cards of their library into their graveyard.) // You may have this creature enter as a copy of any creature card in a graveyard, except it's a 4/4 black Zombie in addition to its other colors and types. | Jokubas Uogintas

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

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

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

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