Undo revision 2971155 by FinnishPokéFan92 (talk) what's wrong with this edit? i changed it because ash doesn't have greninja anymore.
Shortly after evolving into Greninja, through its strong bond with Ash, he
can call upon a transformation similar to [[Mega Evolution]], where it takes on an appearance resembling its Trainer while being covered in a water veil. In its final form, the water veil moves from around its body to its back and forms an "X" shape, which resemble wings, then the wings form into a small sphere shape of water on the middle of its back with a light blue ring in the middle of it and it then grows in size until it forms into a giant shuriken made of water. Its full capabilities were unknown, but it appears to give a significant boost in speed and power. In its completed form, it can rival the power of Mega Evolved Pokémon. This form comes with a side-effect: whenever Greninja takes damage, the pain is shared with Ash in the same location where Greninja was hurt. Ash is also shown to be able to see from Greninja's point of view and will occasionally mimic Greninja's movements. Ash describes it as feeling like he "became" Greninja. It is revealed by Clemont's device that Ash and Greninja share exactly the same heartbeat while Greninja is in the form and that the form can be accessed when Ash and Greninja's feelings synchronize. If the form is pushed too hard, it is possible for Ash to pass out from the resulting exhaustion and pain. The term '''Ash-Greninja''' (Japanese: '''サトシゲッコウガ''' ''Satoshi-Gekkouga'') was officially coined by Bonnie in ''[[XY120|All Hail the Ice Battlefield!]]''. During the [[XY121|next episode]], Ash and Greninja made amends and were able to trigger the transformation at will. [[XY122|By the time of their rematch against Wulfric]], Ash and Greninja were able to use the form without passing out, and although they still shared each other's pain, it seemed to be more manageable for Ash to handle. [[XY129|During the Lumiose Conference]], it is soon revealed by Professor Sycamore that the transformation Greninja had been going through is known as [[Bond Phenomenon]].