Origin magic is unknown, Ancivan unable to find any record regarding magic from the Ancient Civilization on the Infinius. Ancivan use them to replace their present technology and eventually the usage of Magic became common for them. The development of Magic keep evolving at fast rate until they created something that lead to end of Ancivan Civilization.
After long time the land where Ancivan live is falling down to the surface because there no one alive to maintenance it, after crashing into various place in the surface the land dweller found the remains of Ancivan technology and once again the development of Magic started from beginning.
Magic capable to rewrite reality in various way and scale. For example creating a simple fire torch to making an island flying. In theory magic potential is said to be unlimited but unfortunately it was limited by the formula and energy needed to activated the magic.
Magic can be categorized into several class depending on how much they interfere with reality.
Low Class / Elementary Magic
Small scale reality interference, this type of magic that easiest to perform since the mana required is not that large and the formula not really complicated. Most Magician capable to perform this magic by their self.
Magic at this scale capable to manifest fire and shoot it.
Medium Class / Advanced Magic
Medium scale reality interference, this type of magic is harder to perform since it need larger mana supply also it's required longer and complicated formula. Advanced magic can be performed by several people together to make the magic activated faster there only certain amount of individual capable to perform this magic by their self.
Magic at this scale capable to defy Gravity or creating Barrier.
High Class / Master Magic
Large scale reality interference, this type of magic not possible to be performed by normal means since it's need a constant mana supply at large amount also the formula became longer and more complicated. It's also called Ritual magic since it's need a lot amount of people to perform this magic for several days.
Magic at this scale capable making and island flying or destroy a large city.
Unknown Tier / Lost Magic
Can be called a theory magic or concept magic since it's not possible to human to perform this type of magic. The mana required is not possible to be collected by normal means and the Formula is incredibly complicated so it need something like quantum computer to make it which not existed on Infinius.
For example dimensional travel magic or time travel magic.