Fal'dorei Strider is a Rogue minion card (rarity: epic) 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 Tyler West Studios, who also made 17 other artworks for Hearthstone.
The card costs 4 mana, has 4 attack and 4 health, and its card text reads: "Battlecry: Shuffle 3 Ambushes into your deck. When drawn, summon a 4/4 Spider."
The flavor text of the card is the following: What’s worse? Seeing the spider, or NOT seeing the spider, but knowing it’s somewhere in your deck?
Based on 121 quiz answers, the card is easy to memorize: 90% of them were correct. The question on “Attack” is answered correctly most often (94%), the one on “Health” least often (84%). 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 86% of the time.