Kalecgos is a Mage minion card (rarity: legendary) that belongs to the "Rise of Shadows" set, which was released on 09.04.2019 and is one of initially 136 cards. The artist of this card was Chris Rahn, who also made 8 other artworks for Hearthstone.
The card costs 8 mana, has 4 attack and 12 health, and its card text reads: "Your first spell each turn costs (0). Battlecry:Discover a spell."
The flavor text of the card is the following: He was once the Aspect of Magic but gave it up to focus on cheap tricks.
Based on 121 quiz answers, the card is easy to memorize: 98% of them were correct. The question on “Cost” is answered correctly most often (100%), the one on “Attack” least often (96%). An answer takes 5.4 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.