Onyx Bishop is a rare Priest minion card that belongs to the "One Night in Karazhan" set, which was released on 11.08.2016 and is one of initially 45 cards. The artist of this card was Arthur Gimaldinov, who also made 69 other artworks for Hearthstone.
The flavor text of the card is the following: B4 is a nice place to visit, but he wouldn't want to live there.
The card is on average to memorize with 70% of correct quiz questions.
