There exist 3 arts, or sciences or magics, that exist in the universe of Corpus Opera and that can be used to shape it. They are Verinomination, Astrology and Alchemy. They are fundamental and adamant, never to be ceased.
Verinomination is the knowledge of the True First Tongue. Every creature, natural object, feeling, phenomenon and being has a true name. This name is intrinsic to it. Some ancient-most beings, like the Planets, know their own true names but keep it secret from others. Most creatures don't know their true name.
Knowledge over one's true name grants power over them. The knower can command the other to do anything. This must respect the Scale of Beings, however.
Astrology pertains the workings in the heavens and is the magic of the Stars and the Planets. The Stars dance in the firmament creating a variety of constellations that affect the Universe, while the Planets' crossings create a zodiac. Their very powers are derived from their esoteric knowledge on Astrology and their fundamental aspects as astrological beings.
Alchemy consists of a large set of rules and bases from which the Universe works upon. It is a fact that the Universe is composed of over a hundred elements and that these interact through reactions.
A skilled alchemist has control over the matter and its proprieties and may craft tools and brew potions that will help them in life and work.