"UnkNew2" is a card set value automatically given to cards of unknown purpose during the wiki's card import process. To date, all cards with this set have turned out to be intended for use in Tavern Brawls, and as such cards with this set are generally assumed to be Tavern Brawl cards.
This value should not be displayed on the wiki, so if a card is displaying this set in its infobox, it should be set to something else, depending on the card in question:
- If the page is already marked as a Tavern Brawl card, the card set can simply be changed to 'Tavern Brawl' through the card's data page.
- If the page is marked as any other type of card, this may be grounds to dispute the purpose of the card. Posting a message on the card's talk page pointing out the "UnkNew2" value might be a good start.