Ring of Magic Missiles

This slender silver ring is set with a thumb-sized sapphire that never seems to sit still. When worn, the gem turns like a tiny celestial sphere, its surface flickering with pale blue sigils that orbit beneath the stone. A caster can feel a faint pressure at the base of the finger, like a spell waiting to be released. When the ring is used, motes of light gather above the stone and split into sharp, perfect darts of force.