Charybdis

Charybdis is a relatively small world often summarized as the most chaotic place in the known Kathreftis, it is a world entirely ruled by nature, where although there is intelligent life, there is no concept of civilization and there is no ruling power in the entire world besides evolution. Besides a vast amount of vegetation, the only living organism is a being whose base form is unknown, for it can evolve overnight and has done so for the entire unknown history of the world, these creatures are usually called "Scylla". The climate on Charybdis is extremely diverse and harsh and can sometimes shift entirely over the span of a few hours a region can go from being a dense jungle to a volcanic hell. Plants however, evolve just as fast as scylla and can therefore often survive the climate changes, hibernating until the climate shifts back into their favor.

Unknown to all its inhabitants, Charybdis is a living arcane entity, or an arcane system one could say. There is no indication on Charybdis being a sentient being with feelings and personality and it appears to be more like an autonomous system protecting itself. There is an impenetrable force field around Charybdis atmosphere that is completely impenetrable. The only way into Charybdis is through a dimensional tear.

Charybdis' underground has many cave systems and tunnels that are somewhat safe from environmental changes. Many of the dangerous predators decide to make their nests underground, which is why the underground caves often ends up being the battlegrounds for turf war between Scylla. The underground may be the safest place to escape nature's wrath, but mightier predators lurk there.

The deeper down towards Charybdis' core one would travel, the more unreal things would get. Not only would one have to worry about even greater predators, but Charybdis' core happens to be made out of pure magic, which is believed to be the reason to why evolution is so unrealistically rapid on the planet. The core is also the reason to why highly evolved Scylla can naturally develop magical abilities.