It'd be hard to get the game out from under him. --- Camelot asked for your support of Golden Sun 4! http://ipetitions.com/petition/operation-sunrise/ | http://facebook.com/pages/Operation-Sunrise/371417546251291
a main plot point will be collecting the 7 things to summon him and get your wish granted
And then you catch him and get unlimited wishes.
As proven by Cyrus, poke'balls forces a limit on the power of legendaries.
You'd need to form an object out of sufficient pieces, that are related to the legend(s) you want to control. To then be able to use the full extent of their powers. --- The refurbish NER, oh how you've redeemed me. Walker, you're here because you wanted to be something you're not, a hero ~Konrad