You have to buy it on the website.
yes.
Summon it in a duel
Unfortunately you cannot face one of your Turbo Deck recipes in a Recipe Duel.
in the duel runner shop or its the computer rally doesn't let you on
Stardust Dragon can be obtained in "The Duelist Genesis" booster pack, or as a gift from Yusei Fudo after defeating him an undesignated number of times in a Duel or a Turbo Duel.
First you go to your Duel Runner menu in Story Mode (click on the icon that looks like Yusei's Duel Runner). Select to edit your Runner, scroll down to sheilds, and select it to edit them.
you can't the stardust accelerator is yugioh 5ds. Head of exodia is original yugioh
here to buy yugioh duel disk
the official yugioh duel accelerator has a place called kaiba corps and you go in it and a man starts to tell you to try out this new thing, so say yes and after that you can choose an oppenent that can be from any series! (exept for yugioh Zexal)
Red Dragon Archfiend can be obtained in "The Duelist Genesis" booster pack, or as a reward from defeating Jack Atlas an undesignated number of times in a Duel.
Go to Yugioh-cards.com to check for updates when new tuornament on yugioh 5'ds be out.
Where is the pipeline in yugioh 5d's stardust accelerator