Curse of Agony is a rare Warlock spell card that belongs to the "Onyxia's Lair" addition of the "Fractured in Alterac Valley" set. It was released on 15.02.2022 and is one of initially 35 cards. The artist of this card was Slawomir Maniak, who also made 84 other artworks for Hearthstone.
The flavor text of the card is the following: Now, fools, you shall all understand my back pain!
The card is easy to memorize with 94.44% of correct quiz questions.