I NEVER USE MY MASTERBALL, In all pokemon games, I never use it. Why? I dunno, its unique, so if a pokemon is gonna reside in it, it must be one of a kind. Kyurem for example doesn't fit in my criteria, if I catch kyurem with it, then why not reshiram who is in the same level of Mightyness. I will only use it on a pokemon That is One out of all, in other Words.....Its not gonna happen :\