battle tower

[SeleucusII]

Which battle tower do i have to go through to get ho-oh.The rpg or the colosseum battle,if it's the colosseum battle does it matter whether i go through double or single battle :confused:

[Gagome]

You have to go to colosseum battle mode and register a team from story mode.
It doesn't matter if you choose single or double.
To make it easier you could trade Pokemon from your GBA cart to Colosseum and use them to battle.

Don't forget that all 48 Pokemon have to be purified to get Ho-oh!