As both flutes were played, the Altar began lighting up, the circle at the top opening and firing a beam of light into the ground.  Suddenly, Cosmo burst out of it's Pokeball and flew into the beam, evolving into Lunala.  "C-Cosmo!?" Chuck said, shocked at the sudden transformation.  "So, you were one of the Legendary Pokemon all along."  Cosmo roared, opening an Ultra Wormhole at the Altar.