The Ring of Elemental Command (air) is linked to the Elemental Plane of Air. Every Ring of Elemental Command has the following two properties:
Elemental Bane
While wearing the ring, you have Advantage on attack rolls against Elementals and they have Disadvantage on attack rolls against you.
Elemental Compulsion
While wearing the ring, you can take a Magic action to try to compel an Elemental you see within 60 feet of yourself. The Elemental makes a DC 18 Wisdom saving throw. On a failed save, the Elemental has the Charmed condition until the start your next turn, and you determine what it does with its move and action on its next turn.
Elemental Focus
While wearing the ring, you benefit from additional properties corresponding to the ring's linked Elemental Plane:
Air
You know Auran, you have Resistance to Lightning damage, and you have a Fly Speed equal to your Speed and can hover.
Spellcasting
The ring has 5 charges and regains 1d4 + 1 expended charges daily at dawn. While wearing the ring, you can cast a spell from it. A spell cast from the ring has a save DC of 18. Choose the spell from the following list: Chain Lightning (3 charges), Feather Fall (0 charges), Gust of Wind (2 charges), Wind Wall (1 charge)