You join someone in tower or get invited [b][u]Edit[/u][/b] : [quote]This is for the glitch/exploit that allows you to keep your iron banner rank from last time in order to buy the new weapons without grinding the banner. You just stay in orbit during the reset and go to the tower, your rank doesn't rest until you log off/switch characters. Bungie attempted to fix this by blocking access to the tower but you can simply join off of someone else(that's already in the tower).[/quote]

You can also change your armour around.

Wrong