heres wat i do tu have a 1/5000 chance of some of the legedaries to have it.Cause i fought dialga and when i caught him he had the berry but REMEMBER TO SAVE RIGHT AFTER tu CATCH HIM CAUSE IF tu HAVE THE BERRY AS HIS ITEM HE WILL NOT DO WAT U SAY.TOO INCREASE CHANCES GET AS MANY POKEBALLS SAY tu HAVE 100 pokeballs tu HAVE A 200/5000 CHANCE!