"Unsubstantiate" is a blue instant spell from the Magic: The Gathering Core Set 2021, holding an Unknown rarity designation and numbered 82 in the set. Valued at $0.22, it serves as a versatile tool for countering spells or returning nonland permanents to their owner's hand. While not a high-demand card, it appeals to players looking to enhance their control strategies in various formats. Collectors may find its affordability a point of interest for budget-conscious decks.