Spreading Madness is a rare Warlock spell card that belongs to the "Whispers of the Old Gods" set, which was released on 26.04.2016 and is one of initially 134 cards. The artist of this card was Mauricio Herrera, who also made 97 other artworks for Hearthstone.
The flavor text of the card is the following: Most citizens of Darkshire wear those surgical masks to prevent spreading Madness to tourists.
The card is easy to memorize with 91.67% of correct quiz questions.
