First printed in Phyrexia: All Will Be One (2023)
All 4 prints
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Artifact
Nonland permanents you control are artifacts in addition to their other types. The same is true for permanent spells you control and nonland permanent cards you own that aren't on the battlefield.
"Careful—however they might look, they're not human. A step too close and they'll drag you in."
—Kara Vrist, resistance spymaster
- Illustrated by
- Martin de Diego Sádaba
Legality
- Legal in
- Pioneer, Modern, Legacy, Vintage, Historic, Timeless, Penny Dreadful, Gladiator, Commander, Duel Commander, Oathbreaker, Brawl, Competitive Brawl
- Not legal in
- Standard, Pauper, Future Standard, Alchemy, Premodern, Old School 93/94, Pauper Commander, PreDH, Tiny Leaders, Standard Brawl
Rulings (2)
- Encroaching Mycosynth turns all permanents you control into artifacts. Permanent spells you control become artifact spells in addition to their other types, and nonland permanent cards you own in other zones become artifact cards in addition to their other types.
- Encroaching Mycosynth's ability causes Auras to become artifacts. This makes it more likely that another effect (such as that of March of the Machines) will make those artifact Auras into creatures. An Aura that's also a creature can't enchant anything. It's unattached the next time state-based actions are checked, and then immediately put into its owner's graveyard as a second state-based action.
Prices
MTGO price: 0.006 TIX, the cheapest non-foil print (average sell price on GoatBots, 1 Nov 2026).
Combos
507 combos, the most popular first:
- Infinite damage, Infinite death triggers…: Blasting Station + Encroaching Mycosynth + Summoning Station
- Infinite creature ETB, Infinite tapped creature tokens: Encroaching Mycosynth + Training Grounds + Urza, Lord High Artificer + Urza, Prince of Kroog
- Infinite death triggers, Infinite creature ETB…: Encroaching Mycosynth + Grinding Station + Summoning Station
- Infinite death triggers, Infinite creature ETB…: Encroaching Mycosynth + Goblin Welder + Scrap Welder
- Infinite artifact ETB, Infinite artifact tokens…: Clock of Omens + Encroaching Mycosynth + Magda, Brazen Outlaw
- Infinite colorless mana, Infinite death triggers…: Ashnod's Altar + Encroaching Mycosynth + Summoning Station
- Infinite artifact ETB, Infinite artifact tokens…: Clock of Omens + Encroaching Mycosynth + Jan Jansen, Chaos Crafter
- Infinite colored mana, Infinite death triggers…: Encroaching Mycosynth + Phyrexian Altar + Summoning Station
- Infinite death triggers, Infinite creature ETB…: Dross Scorpion + Encroaching Mycosynth + Goblin Welder
- Infinite copies of a specific planeswalker: Encroaching Mycosynth + Mirror Box + Saheeli Rai