Magic

Since the creation of the world, magic has been running in the core of the different islands. Not everyone has bending abilities.

The four 3000 years old mystical creatures were gifted with bending abilities. It means that they are each able to bend a different element. When the Hundred Year War started, the four creatures started to teach humans their magic in order for them to defend themselves. For years, bending has evolved and sub-forms were discovered and developed.

There is approximately one non-bender for four benders. However, most benders only know the basics and don't really use their bending abilities. There are a few schools around the country but rarely in the cities.

People are either born benders or not. Nowadays, in the cities, it happens that benders never discover their abilities because they don't really need it anymore.

Bending used to be pretty common and used. However, these past few centuries, it is rarely used in the cities because it's not as useful as it used to be and using your bending in a residential area is really dangerous and you can easily get arrested for non-authorised bending, People living out of the cities see bending as a useful way to get things done.

The fifth creature, that was created by the others, is able to bend all the elements. It also chose a human who's able to do the same. The creature guides them through dreams and visions.