Source: Dungeon Master's Guide

Ring, Very Rare (Requires Attunement)

You can cast Dancing Lights or Light from the ring.

The ring has 6 charges and regains 1d6 expended charges daily at dawn. You can expend its charges to use the properties below.

Faerie Fire. You can expend 1 charge to cast Faerie Fire from the ring.

Lightning Spheres. You can expend 2 charges as a Magic action to create up to four 3-foot-diameter spheres of lightning.

Each sphere appears in an unoccupied space you can see within 120 feet of yourself. The spheres last as long as you maintain Concentration, up to 1 minute. Each sphere sheds Dim Light in a 30-foot radius.

As a Bonus Action, you can move each sphere up to 30 feet, but no farther than 120 feet away from yourself. The first time the sphere comes within 5 feet of a creature other than you that isn’t behind Total Cover, the sphere discharges lightning at that creature and disappears. That creature makes a DC 15 Dexterity saving throw. On a failed save, the creature takes Lightning damage based on the number of spheres you created, as shown in the following table. On a successful save, the creature takes half as much damage.

Number of Spheres Lightning Damage
1 4d12
2 5d4
3 2d6
4 2d4

Shooting Stars. You can expend 1 to 3 charges as a Magic action. For every charge you expend, you launch a glowing mote of light from the ring at a point you can see within 60 feet of yourself. Each creature in a 15-foot Cube originating from that point is showered in sparks and makes a DC 15 Dexterity saving throw, taking 5d4 Radiant damage on a failed save or half as much damage on a successful one.