Flanking Strike is a Hunter spell card (rarity: common) that belongs to the "Kobolds & Catacombs" set, which was released on 07.12.2017 and is one of initially 135 cards. The artist of this card was Arthur Bozonnet, who also made 110 other artworks for Hearthstone.
The card costs 4 mana and its card text reads: "Deal 3 damage to a minion. Summon a 3/3 Wolf."
The flavor text of the card is the following: Wolves to the left and arrows to the right, here I am stuck in the middle with you.
Based on 110 quiz answers, the card is easy to memorize: 96% of them were correct. The question on “Card text” is answered correctly most often (98%), the one on “Cost” least often (94%). An answer takes 5.1 seconds on average. In the Pixel Quiz, which shows only the shape and colour of the card, it was recognised correctly 100% of the time.