Demonfire is a common Warlock spell card that belongs to the "Legacy" set. The artist of this card was Ben Wootten, who also made 1 other artworks for Hearthstone.
The flavor text of the card is the following: Demonfire is like regular fire except for IT NEVER STOPS BURNING HELLLPPP
The card is easy to memorize with 95.96% of correct quiz questions.