Once a card reaches it's #/99 print limit, digital only versions of the Fusion card will be awarded. However, there will still be a chance at a parallel and the digital Fusion can be used to craft more cards. Digital only Fusion cards will have at least 4 matching attributes, which will provide you a bonus towards getting a parallel!

Once all parallels have been crafted, the even will end and no more cards can be crafted in Fusion.