Unwilling Sacrifice is a Warlock spell card (rarity: rare) that belongs to the "Knights of the Frozen Throne" set, which was released on 10.08.2017 and is one of initially 135 cards. The artist of this card was Tyler Walpole, who also made 13 other artworks for Hearthstone.
The card costs 3 mana and its card text reads: "Choose a friendly minion. Destroy it and a random enemy minion."
The flavor text of the card is the following: Stand right... there. Perfect, perfect! Now don't move.
Based on 121 quiz answers, the card is moderately hard to memorize: 85% of them were correct. The question on “Card text” is answered correctly most often (91%), the one on “Cost” least often (73%). An answer takes 6.8 seconds on average.