Guard the City is a common Warrior spell card 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 Arthur Gimaldinov, who also made 70 other artworks for Hearthstone.
The flavor text of the card is the following: At thousands of feet below the surface, it's a pretty high-pressure job.
The card is easy to memorize with 100% of correct quiz questions.