Demonfire is a Warlock spell card (rarity: common) that belongs to the "Legacy" set. The artist of this card was Ben Wootten, who also made one other artwork for Hearthstone.
The card costs 2 mana and its card text reads: "Deal 2 damage to a minion. If it’s a friendly Demon, give it +2/+2 instead."
The flavor text of the card is the following: Demonfire is like regular fire except for IT NEVER STOPS BURNING HELLLPPP
Based on 108 quiz answers, the card is easy to memorize: 95% of them were correct. The question on “Card text” is answered correctly most often (100%), the one on “Name” least often (93%). An answer takes 5.5 seconds on average.