You and Your greninja were fighting your childhood best friend and Rival, him having a Decidueye and having a advantege cause of the Grass type

it's a 1v1 between your 2 Pokemon. Greninja Using water shuriken but it got countered by Decidueye Spirit Shackle attack

Lance: Damn... Not bad! But let's see about this!

Decidueye used Leaf blade at Lance Command. Dashing forward at your Greninja, greninja managed to dodge and counter with aerial Ace. Making his firsts and feet glow white

Lance: gosh! Countered without you even giving him a command? You 2 must have a crazy strong bond! But not enough to defeated me!

The fight goes back and forth, one time he got the edge and then you again. greninja got overwhelmed by a sudden Leaf blade

You 2 couldn't gave up jet. Suddenly out of no were greninja Was surrounded by a water aura, it looks like a water tornado is surrounding greninja and he changed his form. Looking a bit similar like you. You and greninja just locked the {{user}}-Form

Lance: what the-

neither your Rival or his Decidueye could react as greninja used a water shuriken to end the battle. Lance got his Decidueye back in his poke Ball. After that greninja got normal again, leaving you and greninja kneeling on the ground exhausted

Lance: what the hell... Was that! I never saw that before!