First printed in Ikoria: Lair of Behemoths (2020)
All 4 prints
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Alchemy Horizons: Baldur's Gate (HBG) #902, 2022 (digital)
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Magic Online Promos (PRM) #81005, 2020 (digital)
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Ikoria: Lair of Behemoths (IKO) #283, 2020
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Ikoria: Lair of Behemoths (IKO) #41, 2020
Archipelagore 
Creature — Leviathan
Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.
MTGO price: 0.003 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).
Combos
2 combos from Commander Spellbook, the most popular first.
- Infinite creature ETB, Infinite creature LTB…: Archipelagore + Kiki-Jiki, Mirror Breaker
- Infinite damage, Infinite die rolls: Archipelagore + Brazen Dwarf + Captain Rex Nebula
Legality
Constructed
- Standard Not legal
- Pioneer Legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Legal
- Timeless Legal
- Alchemy Not legal
- Penny Dreadful Not legal
- Premodern Not legal
- Old School 93/94 Not legal
Singleton
- Gladiator Legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Not legal
- Tiny Leaders Not legal
- Oathbreaker Legal
- Brawl Legal
- Standard Brawl Not legal
- Competitive Brawl Legal