Wrathguard is a Warlock minion card (rarity: common) that belongs to the "The Grand Tourney" set, which was released on 24.08.2015 and is one of initially 132 cards. The artist of this card was Sojin Hwang, who also made 2 other artworks for Hearthstone.
The card costs 2 mana, has 4 attack and 3 health, and its card text reads: "Whenever this minion takes damage, also deal that amount to your hero."
The flavor text of the card is the following: After playing against 5 Annoy-O-Trons, any normal guard will become a Wrathguard.
Based on 97 quiz answers, the card is moderately hard to memorize: 85% of them were correct. The question on “Card text” is answered correctly most often (100%), the one on “Health” least often (72%). An answer takes 9.8 seconds on average.