Gwent Faction War
Recently faction challenges were announced as a new special event in the game. Users are able to participate by winning matches as either Skellige or Northern Realms. The faction with the greatest games won will reward its users with a premium card while the losing faction receives 100 Meteorite Powder.
Looking at the current war tracker on the playgwent website Northern Realms are in the lead and will probably end up on top. Skellige seems to be lagging behind in comparison. The image below shows the war tracker at the time of this news post.