ELF'S BANK IS THE CONVENENT TOOL TO EXCHANGE THE ELFS REGIONALS, BUT THE PLACE TO DOWNLOAD DISAPPERS! TO GRASP THE BEFORE IS GOOD!
(Just a reminder that the Pokemon Bank will be unavailable to download once the eshop goes down at the end of next month. If you have a 3DS or 2DS but don't have it, now's a good time to go download it. The initial download is free and the transfer services will be free after the eshop goes down.)