XXX-Mas Adventures

Complete special missions to gain Bronze Bells to get 6 unique Winter Set cards available for a limited time. There is a campaign mode with chapters, and a Marathon which lasts throughout the 21 days whereby the final top 500 get the event mythic card.

Getting Bronze Bells gives you the same amount of Winter Stars. The more Stars you got the higher you are in the Marathon. At the end of the Marathon the leaders are determined, and the Final Prize is given.

Bells
The event features three types of Bells : Bronze, Silver and Gold Bells.

Bronze Bells - obtained from opening duel chests, beating campaign chapters, purchase using gems, or quests which open in phase 2.

Silver Bells - obtained from beating campaign special boss chapters, or picking in an XXX-Mas Little Coffer.

Gold Bells - obtained from winning the event daily tournament (top 50 with most Winter Stars each day), or picking in an XXX-Mas Coffer.

Coffers
XXX-Mas Little coffer - 3 pickings, 1 unique event card and Silver Bells instead of cards are guaranteed. Unfortunately, you may be forced to choose between Silver Bells and a unique event card.

XXX-Mas coffer - 5 pickings, 1 unique event card and Gold Bells instead of cards are guaranteed. Likewise, you may be forced to choose between Gold Bells and a unique event card.

XXX-Mas Heavenly coffer - 10 pickings, many unique event cards are guaranteed. Likewise, you may be forced to choose between different unique event cards.

Event Cards
These cards can only be obtained by opening the appropriate coffers during the event.

Campaign
Like old events, campaign mode takes place in a familiar map, and you fight against 7 enemy cards like in duels, but battles require some cookies instead of energy. Those cookies fill slowly (+1 per 5 minutes) like normal energy, and are used to fight chapters and bosses to earn Silver Bells. There are 40 chapters in phase 1 :

Path
Starting from phase 2, you can earn Bronze Bells and Winter Stars by completing Path quests. Completed objectives will not reset at the end of the daily tournament. There is a X5 inflation for the Little and Heavenly XXX-Mas coffers, and only X3 for the XXX-Mas coffers.