Soul

Soul is a strange language that cannot be learned through normal means. It is taught exclusively by the Kereth to the Kereth, and to them this language is sacred. This language is often written than spoken, a precaution of the Kereth as their intent is to keep it a secret. Kereth can make this language appear on surfaces with their thoughts alone, and as they do so the writing can be seen, if only briefly. However, their mental abilities allow them to do this extremely quickly, so that others would not have the time to read it. Therefore, only a few know how it is written, let alone spoken. As soon as it is finished, the writing immediately disappears to the normal eye, and despite the fact that Kereth cannot recognize any parts of it, they can feel and read it. They often write their language over other things to hide it, and if you could see Soul, it looks like a spiral made of smaller, angular spirals strung together. They rarely write and speak this language in the presence of others and because of its secrecy and especially invisibility, this language is extremely rare.