Magic is an ageless, strong, powerful and dangerous supernatural force in the known universe that is capable of distorting, manipulating, and rewriting reality by controling and defying sciences and mathematics.
Magic is used to control, distort and alter scientific law and therefore manipulate the physical system and the whole of reality to an extent. It was also described as word-based science that used words, thoughts, concentration, focus, rituals and willpower, instead of the usual numbers, mathematics, and sciences. It seems to be the ability to mimic the powers of metahumans, like telekinesis or illusions. Magical abilities are meant to defy possibility, which is why some powers given by magic cannot be replicated by regular metahumans. Also, magic sometimes grants the user the ability to overcome the metahumans' powers. Its basic abilites allow the user to manipulate matter, forces and energies in many forms, though the user is usually limited by the nature of the magic they are using, such as its needed rituals, spoken words, and actions required to access the power.
It is believed to consist of universal energies and extra-dimensional forces whose nature is beyond the scope of the technologically-oriented science of all known sentient races. It is often used to simulate other powers, usually psychic or otherwise psionic in nature, such as reality warping, matter manipulation, telekinesis, energy projection, teleportation, telepathy, enhanced empathy, mind control and elemental attacks. A user of magic usually requires a source of related energy, which can be include internal reserves, mystical beings, alternate dimensions, or from their surroundings, supposedly from thin air. The demension Earth was once full of these energies. Therefore it is believed that magical and scientific understanding of the same phenomenon are interchangeable.
Since the abilities of Kryptonians, however incredible, are natural, rather than supernatural, powerful magic-based attacks completely bypass their invulnerability, making the mighty aliens just as vulnerable to these magic-based attacks as a regular human with no enhanced durability would be. This is possible due to magic defying and altering sciences.