Radar Detector is a Paladin spell card (rarity: epic) that belongs to the "Voyage to the Sunken City" set, which was released on 12.04.2022 and is one of initially 135 cards. The artist of this card was Sergey Tsvelykh, who also made 52 other artworks for Hearthstone.
The card costs 2 mana and its card text reads: "Scan the bottom 5 cards of your deck. Draw any Mechs found this way, then shuffle your deck."
The flavor text of the card is the following: "Yup! I definitely don't know how to read radar."
Based on 55 quiz answers, the card is moderately hard to memorize: 87% of them were correct. The question on “Name” is answered correctly most often (96%), the one on “Cost” least often (71%). An answer takes 6.5 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.