Unstable Obelisk is a colorless artifact from the Magic: The Gathering Commander 2021 set, classified as an Unknown rarity. Its current market value is approximately $0.25, making it an accessible option for collectors and players alike. The card allows for strategic play by providing colorless mana and an ability to destroy target permanents, enhancing its utility in various deck builds. As a staple in some Commander formats, it holds a niche but steady presence in the market.