Manifest Shades of Stygia, the Apeirons are beings of Matter that can be called upon with a Summoning.
Drawing the name from the theoretical substance from which all matter is derived, these beings sometimes take human form; generally that of a craftsman, alchemist, or scientist.
Just as often, they appear as something in between states of matter — ice melting to liquid, a luminous cloud of gas, or a humanoid figure made of quicksilver.
Mages consult them about magical materials and how best to work them, the secrets of alchemy, and where to find lost Artifacts.