Rings of Fire, Ice, Stone, and Wind

These rings are made of various elements — either magical fire (rare), ice (very rare), stone (rare), or wind (uncommon). While wearing one of these rings, you can use it to cast an elemental wall spell associated its material as an action: wall of fire, wall of ice, wall of stone, or wind wall. Once used, this property of the ring can’t be used again until the next dawn.

When cast from the ring, the wall must be in a circle centered on you. The height and thickness of the walls vary by type: wall of fire is 20 feet tall and 1 foot thick, wall of ice is 10 feet tall and 1 foot thick, wall of stone is 10 feet high and 6 inches thick, and wind wall is 15 feet high and 1 foot thick.

The walls have a spell save DC of 13 (uncommon), 15 (rare), or 16 (very rare).