Pokemon Omega Ruby and Alpha Sapphire is making a big splash at E3, and now a new trailer has been unveiled showcasing Mega Diancie.

"It was revealed today that when players transfer Mythical Pokemon Diancie from Pokemon X or Pokemon Y into Pokemon Omega Ruby or Pokemon Alpha Sapphire, it can Mega Evolve in battle after obtaining its Mega Stone," says the official Pokemon Company press release.

"When Diancie Mega Evolves into Mega Diancie, the impurities on its body’s surface fall away, and it sparkles so brilliantly it’s impossible to look directly at it. Mega Diancie can make good use of the Fairy-type move Dazzling Gleam, which deals great damage to your opponent by unleashing powerful beams of light. In Double Battle, the move will strike both of the opposing Pokémon."

What's interesting about Diancie is that distribution has only been confirmed for Pokemon X and Y, and not Omega Ruby and Alpha Sapphire. It also sounds like the Mega Stone may be found in the Hoenn remakes, but not X and Y.

It is possible Diancie will be used as a way to pull Pokemon X and Y fans into Pokemon Omega Ruby and Alpha Sapphire, so they can obtain certain Pokemon like Mega Diancie.

Distribution details on Diancie will be announced at a later date, presumably around the time the Pokemon movie "Diancie & the Cocoon of Destruction" will premiere in theaters in Japan.