Sweet Justice

Complete Special Missions and Quests to gain Bronze Hearts to get 6 unique Justice 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 Hearts gives you the same amount of Valentine Cups. The more Cups 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.

Hearts
The event features three types of Hearts : Bronze, Silver and Golden Hearts.

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

Silver Hearts - obtained from beating campaign chapters with 3 stars (only for the 1st time), or picking in a Bronze Valentine Coffer.

Golden Hearts - obtained from winning the event daily tournament (top 50 with most Valentine Cups each day), or picking in a Silver Valentine Coffer.

Coffers
Bronze Valentine coffer - 3 pickings, 1 unique event card and Silver Hearts instead of cards are guaranteed. Unfortunately, you may be forced to choose between Silver Hearts and a unique event card.

Silver Valentine coffer - 5 pickings, 1 unique event card and Golden Hearts (Gears in phase 3) instead of cards are guaranteed. Likewise, you may be forced to choose between Golden Hearts and a unique event card.

Golden Valentine coffer - 10 pickings, many unique event cards and Artifact dups are guaranteed. Likewise, you may be forced to choose between Artifact dups and different unique event cards.

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

Artifacts
Duplicates of the same artifact are combined to level it up, then inserted into any light card (without an ability). Assuming you have enough dupes, it is possible to upgrade an artifact during the next week (when it's no longer available), or even after the event ends, exactly like card seducing.

Justice Strike (10-20-35-50-65%).

Justice Revenge (3-6-10-15-20%).

Justice Retribution (5-10-15-20-30%).

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 Passion Power instead of energy, which fills slowly (+1 per 5 minutes) like normal energy, and is used to fight chapters to earn Bronze/Silver Hearts. There are 30 chapters in each phase :

Path
Starting from phase 2, you can earn Bronze Hearts and Valentine Cups by completing Path quests. Completed objectives will not reset at the end of the daily tournament. There is a X5 inflation for all Valentine coffers !

Daily Contest
In phase 3, the coffers' cost did increase by X3 for Bronze and Silver coffers (a total of X15 from phase 1!), while Golden coffer increased by X5 (a total of X25 from phase 1!), and there is no event daily tournament, but you can earn Golden Hearts and marathon pts, in addition to the 2 remaining event cards (Governor and Heresy Seeker) from the regular daily tournament measured in mojo as follows :

SUMMARIZE:
From now on, you need to win at least one time the top 1-3 regular daily tournament in the last remaining seven days, to earn the last two cards.