It seems to be tied to the fact the PC version recently came out.
The new Card Flip Campaign is centered around “Chow Len the Prophet” and “Zure, Knight of Dark World”, and for the next 6 days you can get extra Gold, Gems, Duel Orbs and the two aforementioned monsters.
It lasts from November 23rd to 30th.
The event gives you 10 extra Duel Orbs to respawn the generic mob characters.
For the event, Duels will give you an extra 1000 Points meaning you get either a new card, more Gate Keys, or more Gold.
