S1·E20 Before the Reverberation Disappears

After losing Alicetaria and Selesia, Meteora and the others try to trap Altair within the Bird Cage, but the audience sympathizes with Altair and transforms the Bird Cage into a stage for amplifying Altair's powers! Meteora tries to turn the tables on her by bringing out their secret weapon: Sirius, a Creation with the same appearance and the same powers as Altair!