Souls

Souls are mysterious forces that rest inside the minds of most creatures.

Relationship with mind and matter
Souls are composed out of an otherworldly energy, which is able to store information. In their usual state, souls inhabit sentient creatures. Like there is usually a body and brain required for thoughts to form, it needs thoughts and emotions for a soul to move in. Body, psyche and soul influence each other continuously. Loosing a soul or having it altered can lead to major changes, both physical and mental. In contrast, having certain experiences will alter the soul. It's a common believe that a soul is a natural part of it's host, like an organ. Or maybe even the true self of a being.

Outside of a host
Souls usually travel into the Ethereal Veil after they leave their host. Only few beings are able to perceive them in their pure form. The descriptions vary, from appearing like flames to looking like floating jellyfish. If left alone for long enough, souls may search for a new host on their own or turn into incorporeal undead. Because of this, contraty to the true-self or organ theory, some belive souls are distinct creatures. If this is true, they merely live in symbiosis with a host.

Merging
Souls are like liquids. It's possible to mix several together if they are compatible and the right circumstances are met.

Afterlife
Few beings like gods and their specialized servants are able to capture souls.