March of the Machine

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

Blightreaper Thallid | Creature | Fungus | {3}{G/P}: Transform Blightreaper Thallid. Activate only as a sorcery. ({G/P} can be paid with either {G} or 2 life.) | Marta Nael

Copper Host Crusher | Creature | Phyrexian Bear Rhino | Trample Hexproof (This creature can't be the target of spells or abilities your opponents control.) | Nicholas Gregory

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

Herbology Instructor | Creature | Treefolk Druid | When Herbology Instructor enters the battlefield, you gain 3 life. {6}{B/P}: Transform Herbology Instructor. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.) | Sergey Glushakov

Invasion of Muraganda | 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 Muraganda enters the battlefield, put a +1/+1 counter on target creature you control. Then that creature fights up to one target creature you don't control. | Adam Paquette

Invasion of Zendikar // Awakened Skyclave | Battle // Creature | Siege // Elemental | (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 Zendikar enters, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. // Vigilance, haste As long as Awakened Skyclave is on the battlefield, it's a land in addition to its other types. {T}: Add one mana of any color. | Diego Gisbert

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

Ravenous Sailback | Creature | Dinosaur | When Ravenous Sailback enters the battlefield, choose one — • Ravenous Sailback gains haste until end of turn. • Destroy target artifact or enchantment. | Andrew Mar

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

Storm the Seedcore | Sorcery | | Distribute four +1/+1 counters among up to four target creatures you control. Creatures you control gain vigilance and trample until end of turn. | Jason Rainville

Streetwise Negotiator | Creature | Cat Citizen | 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.) This creature assigns combat damage equal to its toughness rather than its power. | Brent Hollowell

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

Tangled Skyline | Enchantment | | When Tangled Skyline enters the battlefield, you gain 5 life and incubate 5. (Create an Incubator token with five +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.) Phyrexians you control have reach. | Martin de Diego Sádaba

Ruins Recluse | Creature | Spider | Reach, deathtouch {3}{G}: Put a +1/+1 counter on Ruins Recluse. | Lorenzo Mastroianni

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

Invasion of Moag | 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 Moag enters the battlefield, put a +1/+1 counter on each creature you control. | Filip Burburan

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

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

Invasion of Lorwyn | 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 Lorwyn enters the battlefield, destroy target non-Elf creature an opponent controls with power X or less, where X is the number of lands you control. | Dan Scott

Invasion of Ergamon | 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 Ergamon enters the battlefield, create a Treasure token. Then you may discard a card. If you do, draw a card. | Manuel Castañón

Rampaging Geoderm | Creature | Dinosaur Beast | Trample, haste Whenever you attack, target attacking creature gets +1/+1 until end of turn. If it's attacking a battle, put a +1/+1 counter on it instead. | Randy Vargas