Proving Grounds is a rare Demon Hunter spell card that belongs to the "The Deadmines" addition of the "United in Stormwind" set. It was released on 02.11.2021 and is one of initially 35 cards. The artist of this card was Mauricio Herrera, who also made 100 other artworks for Hearthstone.
The flavor text of the card is the following: 1v1 me on Proving Grounds, DH only, no items, 4 stocks.
The card is easy to memorize with 90.16% of correct quiz questions.
