First printed in Scourge (2003)
Proteus Machine 
Artifact Creature — Shapeshifter
Morph 
(You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When this creature is turned face up, it becomes the creature type of your choice. (This effect lasts indefinitely.)
MTGO price: 0.01 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).
In the last 30 days 0.0% of Commander decks played it (3 of 6150). Most played in Magda, Brazen Outlaw.
Combos
9 combos from Commander Spellbook, the most popular first.
- Infinite death triggers, Infinite green mana…: Proteus Machine + Yedora, Grave Gardener (+ 1 other requirement)
- Infinite colorless mana, Infinite death triggers…: Ashnod's Altar + Proteus Machine + Yedora, Grave Gardener
- Infinite death triggers, Infinite landfall triggers…: Evolutionary Leap + Proteus Machine + Yedora, Grave Gardener
- Infinite death triggers, Infinite creature ETB…: Altar of Dementia + Proteus Machine + Yedora, Grave Gardener
- Infinite colored mana, Infinite death triggers…: Phyrexian Altar + Proteus Machine + Yedora, Grave Gardener
- Infinite death triggers, Infinite landfall triggers…: Perilous Forays + Proteus Machine + Yedora, Grave Gardener
- Infinite death triggers, Infinite landfall triggers…: Proteus Machine + Starved Rusalka + Yedora, Grave Gardener
- Infinite death triggers, Infinite landfall triggers…: Claws of Gix + Proteus Machine + Yedora, Grave Gardener
- Infinite damage, Infinite death triggers…: Goblin Bombardment + Proteus Machine + Yedora, Grave Gardener
Legality
Constructed
- Standard Not legal
- Pioneer Not legal
- Modern Not legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Not legal
- Timeless Not legal
- Alchemy Not legal
- Penny Dreadful Legal
- Premodern Legal
- Old School 93/94 Not legal
Singleton
- Gladiator Not legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Legal
- Tiny Leaders Legal
- Oathbreaker Legal
- Brawl Not legal
- Standard Brawl Not legal
- Competitive Brawl Not legal
