The Grand Collection is a second round of the same sets and cards — but with better rewards and a more premium-looking badge at the end.
The Grand and regular Collections share a common timer — it runs continuously.
Progress is reset: previously collected cards do not carry over. At the start, you will receive a new starter set of 4 cards.
All card drop sources remain the same.
Visual elements update to reflect that you're in the Grand version.
Once you finish the Grand Collection, there will be no third round — but you can still view cards, open any remaining packs, and send duplicates to friends.
Note: Any cards sent to you before you finished the original Collection will still count toward your Grand Collection if you open them after it starts.