Aeon Stone (Lavender and Green Ellipsoid)

Over millennia, these mysterious, intricately cut gemstones have been hoarded by mystics and fanatics hoping to discover their secrets. Despite their myriad forms and functions, these stones are purportedly all fragments of crystal tools used by otherworldly entities to construct the universe in primeval times.

When you invest one of these precisely shaped crystals, the stone orbits your head instead of being worn on your body. You can stow an aeon stone with an Interact action, and an orbiting stone can be snatched out of the air with a successful Disarm action against you. A stowed or removed stone remains invested, but its effects are suppressed until you return it to orbit your head again.

There are various types of aeon stones, each with a different shape, color, and magical effect. Each aeon stone also gains a resonant power when slotted into a special magical item called a Wayfinder.

This functions as a pale lavender ellipsoid aeon stone, but it casts an 8th-level Dispel Magic spell with a counteract modifier of +31.

The resonant power allows you to cast Detect Magic and Read Aura as arcane innate spells at will.