I think you can do that with Greninja only.

That's the question what if you could do more pokemon greninja

Other than Greninja, right? I would love to see Sylveon. One of the reasons is its my favorite but the other reason is when your Eevee reached a high friendship point (2/5, I think) then only you can get Sylveon if looked from the Anime's perspective, it requires bonding sort of like Greninja does so I think Sylveon should get a bonding like Greninja has.

Nah

Sylveon only requires 2/5 affection and a Fairy type move to evolve

Also I made a thing called Ultimate Shinka before Battle Bond/Mega evolution were made simply because I thought that would be cool

I hope more Pokemon gets this

@Sylveon's creativities When Sycamore explained the evolution phenomenon, he said "ANY POKEMON and their trainer with a strong enough bond..." so it isn't just greninja.

I would want to do it with scorbunny

Ash infernape