Heart-Piercer Manticore is a creature card from the Amonkhet set of Magic: The Gathering, classified as an Unknown rarity. It features a unique ability that allows it to deal damage to players or planeswalkers when it enters the battlefield, adding strategic depth to gameplay. Currently valued at $0.31, it appeals to collectors and players looking for budget-friendly options within the set. Its utility in various formats contributes to its relevance in the market.