Aquastor is an esoteric term coined and used by Paracelsus. It denotes an entity formed by the power of a concentrated thought. This being can obtain a life of its own and can even assume physical form. The aquastor is astral in nature and does not possess spiritual characteristics. Rather, it is controlled by the mind of the person exercising willful imagination. If the imagination of the creator is strong, but unbalanced, the Aquastor can still come into being, but cannot be wielded. Examples of such uncontrolled Aquastors are the Succubus and the Incubus. Aquastors appear in The Book of the New Sun by Gene Wolfe.
