Unburden lets CAP 4 be a very speedy pokemon, though at the cost of no item. Using this in conjunction with a gem is a thing to think about.
Is Illusion just some kind of taboo subject? It caries probably the most risk out of any ability in the game. You are essentially not only bluffing an item, difficult to do already, but bluffing an entirely different pokemon. This ability was one of the main reasons I liked this concept.
Gato took my words out of my mouth.