Unstable Shadow Blast is a common Warlock spell card that belongs to the "Wailing Caverns" addition of the "Forged in the Barrens" set. It was released on 02.06.2021 and is one of initially 35 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: "Unstable" usually means "awesome!"
The card is on average to memorize with 89.47% of correct quiz questions.
