Twilight Elder is a neutral minion card (rarity: common) that belongs to the "Whispers of the Old Gods" set, which was released on 26.04.2016 and is one of initially 134 cards. The artist of this card was Tooth, who also made 14 other artworks for Hearthstone.
The card costs 3 mana, has 3 attack and 4 health, and its card text reads: "At the end of your turn, give your C'Thun +1/+1 (wherever it is)."
The flavor text of the card is the following: Just doesn't understand those Twilight Youngsters any more - with their comic books and their rock music.
Based on 110 quiz answers, the card is moderately hard to memorize: 89% of them were correct. The question on “Card text” is answered correctly most often (100%), the one on “Name” least often (81%). An answer takes 5.7 seconds on average. In the Pixel Quiz, which shows only the shape and colour of the card, it was recognised correctly 67% of the time.