SRD:Ring of Epic Wizardry

Ring of Epic Wizardry
Like the ring of wizardry, this ring comes in a variety of types useful only to arcane spellcasters. The wearer’s arcane spells per day are doubled for one particular spell level. An epic ring of wizardry V doubles 5th-level spells, an epic ring of wizardry VI doubles 6th-level spells, an epic ring of wizardry VII doubles 7th-level spells, an epic ring of wizardry VIII doubles 8th-level spells, and an epic ring of wizardry IX doubles 9th-level spells. Bonus spells from high ability scores, school specialization, or any other source are not doubled.

Caster Level: 23rd (epic wizardry V), 26th (epic wizardry VI), 29th (epic wizardry VII), 32nd (epic wizardry VIII), 35th (epic wizardry IX); Prerequisites: Forge Ring, Forge Epic Ring, wish; Market Price: 250,000 gp (epic wizardry V), 360,000 gp (epic wizardry VI), 490,000 gp (epic wizardry VII), 640,000 gp (epic wizardry VIII), 810,000 gp (epic wizardry IX).