This simple gold band looks like a tiny armored girdle set with small spheres of silver.

A ring of spell-battle informs you of all spellcasting that occurs within 60 feet of you, as well as allowing you to attempt a Spellcraft check (DC 15 + spell level) to identify the spell being cast (even if you can’t see its casting or effect). This is a continuous effect and requires no activation.
Once per day, when you succeed in identifying a spell in this manner, you can activate the ring to counterspell that spell as if with dispel magic, or change the target of the spell to any target within 60 feet of you. If you choose an illegal target (because of the spell’s range limitation or other restrictions), the spell functions normally and the effect is wasted.

Prerequisites: Forge Ring, detect magic, dispel magic, spell turning, Spellcraft 10 ranks.
Cost to Create: 6,000 gp, 480 XP, 12 days.