So I went out hunting legendaries at the end of the game. The first one I found was Heatran, but knowing my luck, I fainted it. After a while, I had encoutered Heatran, Lugia, Mesprit, and Deoxys in that order. And fainted them all. Angry, I decided to challenge the elite 4 again. Once again,knowing my luck, I lost. Then, I got the eon ticket and accidentally used the masterball on Latios.