Ragnaros, Lightlord is a legendary Paladin minion 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 James Ryman, who also made 282 other artworks for Hearthstone.
The flavor text of the card is the following: What happens when you try and corrupt a corrupted firelord? DOUBLE NEGATIVE, INSECT!
The card is easy to memorize with 100% of correct quiz questions.