Forewarn
I think it's the ideal flavor ability. For people afraid of Unnerve, I really must stress that I thought through all the angles and simply found it negligibly competitive for CAP 2. Nothing that uses a Lum Berry would want to switch into CAP 2 and nothing that wants to switch into CAP 2 is going to carry a Lum Berry to deal with it! Anyway, whatever wins will be fine, so don't fret kiddies.