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Whenever this creature mutates, put a +1/+1 counter on it.
Abilities, attacks, weakness & resistance
Other cards from Magic Online Promos
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Mysterious Egg (PRM 80939) is a common Creature — Egg from the Magic Online Promos set. It costs {1}, has 0 power and 2 toughness, and gains a +1/+1 counter whenever it mutates. The card serves as a cheap creature that grows through mutation interactions and can enable synergies with mutate-centered decks.
Catalog pricing data as of 17 Apr 2026, 08:46
