Attraction chests are special chests from which you can get Attraction cards.
There're three types of Attraction chests:
1. Basic chest.
Gives you 10 guaranteed common Attraction cards and + 10 common or 10 rare cards. You can get the Basic chest for free (once in several hours), by watching ads or by purchasing with gems.
2. Advanced chest.
Contains 20 common and 10 rare guaranteed cards + 10 rare or 10 epic cards. This chest can be puchased with 100 gems.
3. Deluxe chest.
Contains only guaranteed rewards: 40 common, 20 rare and 20 epic cards. The price is also higher: 200 gems.