MasterBall

The masterball is a new feature announced by Masahiro Sakurai himself in a big reveal at (unknown). It is very similar to the pokeball in Super Smash Bros 64 to Super Smash Bros. Brawl except that, unlike most pokeball games, it is not meant for catching, instead it releases legendary pokemon which there are many added newly to the game. Legendary pokemon like kyogre can no longer come out of a pokeball. Masterballs spawn as items like pokeballs, but they appear 3 times less often. In other words, on average, for every 3 pokeballs appearing, 1 masterball will appear. The appearance of the master ball is almost the exact same as it's true appearance in pokemon X and Y (only) as shown in the picture to the right.