In Pok--mon Omega Ruby and Alpha Sapphire, when summoned by the Eon Flute, LatiosOR or LatiasAS will Mega Evolve before the player mounts it to soar in the sky. It will Mega Evolve even if it is not holding its corresponding Mega Stone, since the Eon Pok--mon is summoned even if it is no longer in the player's game.read more >>