After you complete the main Collection, if there is still time left until the end of the event, Grand Collection begins as a bonus round.

In Grand Collection, you collect the same card sets as in the main part of the event. All previously collected cards are reset, and you start collecting the same cards again. But this time, the rewards are bigger, and the badge has a special crystal design!

The stars you earned by collecting duplicate cards during the current run of the event carry over to Grand Collection.

After the event ends, the badge you earned as a reward will remain on your profile!