OCG cards:
Dark Magician
Buster Blader
Dark Paladin
Marshmallon

Rush Duel cards:
Gaia the Fierce Knight
Curse of Dragon
Gaia the Dragon Champion

These will have very limited availability, with only 4 copies of each card available in each store, first come, first served. The campaign will run for August 3rd to August 16th.

Source.