Rings of Fire, Ice, Stone, and Wind

Ring, rarity varies

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: wall of fire, wall of ice, wall of stone, or wind wall. When the ring is used in this way, it can't be used again until the following dawn.

The wall created by the ring is always in a 15-foot radius circle centered around 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 14 (uncommon), 15 (rare), or 16 (very rare).

 Sometimes you just need some me time in the thick of combat.