
Flash (You may cast this spell any time you could cast an instant.)
Crystacean has 2 printings, first in Ikoria: Lair of Behemoths (2020). EDHREC ranks it #17,159 among Commander cards. It appears most in Charix, the Raging Isle decks (1,542 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.