
Whenever this creature mutates, put a +1/+1 counter on it.
Mysterious Egg has 3 printings, first in Ikoria: Lair of Behemoths (2020). EDHREC ranks it #11,589 among Commander cards. It appears most in Atla Palani, Nest Tender decks (2,085 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.