Ring of Divergence

This hefty ring of twisting metal splits several times and turns back upon itself.

A ring of divergence provides resistance 10 against a specific type of energy (acid, cold, electricity, fire, or sonic), determined when it is created.

Once per day, if you are targeted by a spell of 3rd level or lower with the same descriptor as the energy type the ring protects against, you can activate the ring as an immediate action to reflect the spell back at the caster, as if spell turning had been cast upon you.

Prerequisites: Forge Ring, resist energy, spell turning.

Cost to Create: 1,500 gp, 120 XP, 18 days.

Source: Magic Item Compendium, page 122.