Corpse Knight [Promo] is a creature card from the Magic: The Gathering Core Set 2020, classified as an Unknown rarity (#206). Valued at $2.83, it features a unique ability that triggers a life-loss effect when it enters the battlefield alongside its synergy with other creature spells. As a part of the promotional offerings, it appeals to collectors seeking to enhance their decks or invest in cards with distinctive artwork and lore.