Overdraft is a Shaman spell card (rarity: epic) that belongs to the "United in Stormwind" set, which was released on 03.08.2021 and is one of initially 135 cards. The artist of this card was Wayne Wu, who also made 14 other artworks for Hearthstone.
The card costs 1 mana and its card text reads: "Tradeable Unlock your Overloaded Mana Crystals to deal that much damage."
The flavor text of the card is the following: Wait. It costs mana to be out of mana?!
Based on 77 quiz answers, the card is easy to memorize: 92% of them were correct. The question on “Card text” is answered correctly most often (100%), the one on “Name” least often (85%). An answer takes 4.9 seconds on average. In the Pixel Quiz, which shows only the shape and colour of the card, it was recognised correctly 83% of the time.