Ring of Elemental Command

This ring is attuned to one of the four Elemental Planes, as determined by the Narrator. While wearing this ring, you have advantage on attack rolls against elementals from the linked plane, and they have disadvantage on attack rolls against you. You can also expend 2 of the ring’s charges to cast dominate monster on an elemental native to the linked plane. The ring imparts additional benefits based on the linked plane.

The ring has 5 charges and regains 1d4+1 charges at dawn. Spells cast from the ring have a save DC of 17.

Ring of Air Elemental Command. You can speak and understand Auran. While wearing this ring, when you fall you descend at a rate of 60 feet per round and take no damage from landing.
If you help kill an air elemental while attuned to this ring, you gain the following:

• Resistance to lightning damage.
• A flying speed equal to your Speed and the ability to hover.
• The ability to cast the following spells by expending the necessary charges: chain lightning (3 charges), gust of wind (2 charges), wind wall (1 charge).

Ring of Earth Elemental Command. You can speak and understand Terran. While wearing this ring, you are not slowed by difficult terrain composed of rocks, dirt, and other earth.
If you help kill an earth elemental while attuned to this ring, you gain the following:

• Resistance to acid damage.
• The ability to move through solid rock and earth as if it were difficult terrain . If you end your turn in those areas, you are pushed into the nearest unoccupied space you last occupied.
• The ability to cast the following spells by expending the necessary charges: stone shape (2 charges), stoneskin (3 charges), wall of stone (3 charges). 

Ring of Fire Elemental Command. You can speak and understand Ignan. While wearing this ring, you have resistance to fire damage.
If you help kill a fire elemental while attuned to the ring, you gain the following:

• Immunity to fire damage.
• The ability to cast the following spells by expending the necessary charges: burning hands (1 charge), fireball (2 charges), wall of fire (3 charges).

Ring of Water Elemental Command. You can speak and understand Aquan. While wearing this ring, you can stand on and move across any liquid surface as if it were solid ground.
If you help kill a water elemental while attuned to the ring, you gain the following:

• The ability to breathe underwater and have a swimming speed equal to your Speed.
• The ability to cast the following spells by expending the necessary charges: create or destroy water (1 charge), ice storm (2 charges), control water (3 charges), wall of ice (3 charges).