Wailing Vapor is a common Shaman minion card that belongs to the "Wailing Caverns" addition of the "Forged in the Barrens" set. It was released on 02.06.2021 and is one of initially 35 cards. The artist of this card was Samche Chen, who also made 5 other artworks for Hearthstone.
The flavor text of the card is the following: If you have The Vapors, your Humors might be imbalanced.
The card is easy to memorize with 96.08% of correct quiz questions.