
Whenever you cast a multicolored spell, this creature gets +3/+3 until end of turn.
Gloryscale Viashino has 2 printings, first in Alara Reborn (2009). EDHREC ranks it #24,892 among Commander cards. It appears most in Rienne, Angel of Rebirth decks (102 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.