Resetting Ev's using berries and legendary encounter

[shademonkey]

The EV-reducing berries are already in the game. You can buy them in Kevlar Town.

The berries it's not for IVs? I Everytime forgot about IVs and EVs. And the sleep girl quest would be awesome to get gamma form.

Nope. IVs cannot be influenced other than through breeding. But you can take off EVs to use them for another stat as many times asyou want using the berries.