Pat McGrath Blitz Amethyst is a neutral purple with a sparkle finish that is permanent in palette and retails for $25.00. In comparison, MAC Tide 'n' Seek (Magic in Your Eyes) is a cool taupe with a metallic finish that is limited edition and retails for $20.00.
MAC Tide 'n' Seek (Magic in Your Eyes) is 85% similar — it is lighter, warmer.