It seems the gifts being given out are Revolver themed.

It will be held on December 9th and 10th, 2017

People enter the event will get 20 “Borreload Dragon” card sleeves.

One participant, via lottery, will get a Rubber Playmat featuring all the card zones and showing Revolver’s monsters from his first Duel with Playmaker.

The event is designed to handle 16 or less participants, and will be a “Free Battle” (no specific rules being enforced other than the Forbidden & Limited List). Entry requires the purchase of one Structure Deck Power Code Link.

Source