Kaleidoscopes
Duality of Man
Adding onto my last post...
A Pok?mon that has a capture rate of 255 will always have a 100% chance to stay in a Quick Ball on the first turn (they have a capture rate multiplier of 4 prior to SM and a capture rate of 5 in the newer games). Beast Balls also have a catch rate multiplier of 5, so they are always guaranteed to capture Pheromosa and Kartana on any turn.