Dialga can be caught in OR/AS - after the main game, it was annoying finding and catching Azelf, Uxie, and Mesprit (Mesprit appears from 4:00am - 7:59pm, Uxie from 8:00pm - 8:59pm, and Azelf 9:00pm - 3:59am) - all 3 need to be in the team. Dialga appears only in Alpha Sapphire.
I usually go to the main FIFA site first, then CONCACAF website (for North America), then Wiki.
It's the same Mega Evolved Altaria, only in OR/AS.
If you try to battle anyone with an XY game, it won't let Altaria Mega Evolve, or any of the newer instroduced moves
Latest by Monday, hope by then I get it started.
Still waiting to see if two more respond. For now it's looking like quite and interesting team
Mightyena, Gardevoir, Dialga, Krookodile, shiny Umbreon, Altria
I know I don't like legendary much, did promised I would use BulbaMember's favorite Pokemon