Whatever you want.
You have to beat the Elite Four once.
beat the Pokemon league
No its not an HM in leafgreen.
Catch all the Pokemon. credits are rolled if you beat the Pokemon league
go sell it at gamestop
nnnnnnnnnnnnnnoooooooooooooooooooooooooo
Use level 60 pokemon!
beat a trainer and search the Pokemon up in your Pokedex
train your Pokemon that's it.
beat the gym leader
beat the Pokemon league.
Beat the elite four.