Once a day during the campaign's duration, you will receive 1 gift that's randomly chosen out of a selection of items every day. Log in every day for the duration of the campaign to receive all the gifts!
Konami is not even trying anymore, just like in the last pick-a-gift campaign, I already have 3 copies of this cards. Of course the gems are good, but gems+NEW cards (just like in the past) are better. Since the launch of DSOD I feel like Konami is fooling us in so many ways, starting from the repeated events to the PvP only ones and ending with the bad cards they now give on regular basis.