Sludge on Wheels is a Warlock minion card (rarity: rare) that belongs to the "Showdown in the Badlands" set, which was released on 14.11.2023 and is one of initially 145 cards. The artist of this card was Patrik Bjorkstrom, who also made 73 other artworks for Hearthstone.
The card costs 3 mana, has 2 attack and 5 health, and its card text reads: "Rush. Whenever this takes damage, get a Barrel of Sludge and add one to the bottom of your deck."
The flavor text of the card is the following: Cruisin' for an oozin'.
Based on 24 quiz answers, the card is moderately hard to memorize: 83% of them were correct. So far only the question on “Name” has enough answers for an evaluation: 82% of them were correct. An answer takes 3.5 seconds on average. In the Pixel Quiz, which shows only the shape and colour of the card, it was recognised correctly 67% of the time.