Brainstormer is a neutral minion card (rarity: common) that belongs to the "The Boomsday Project" set, which was released on 07.08.2018 and is one of initially 136 cards. The artist of this card was Alex Horley Orlandelli, who also made 170 other artworks for Hearthstone.
The card costs 3 mana, has 3 attack and 1 health, and its card text reads: "Battlecry: Gain +1 Health for each spell in your hand."
The flavor text of the card is the following: Her hair was always like that.
Based on 105 quiz answers, the card is easy to memorize: 90% of them were correct. The question on “Name” is answered correctly most often (100%), the one on “Attack” least often (80%). An answer takes 6.9 seconds on average.