PFSRD:Chime Of Interruption
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|This material is published under the OGL|
Price 16,800 gp; Aura moderate evocation; CL 7th; Weight 1 lb.
This instrument can be struck once every 10 minutes, and its resonant tone lasts for 3 full minutes.
While the chime is resonating, no spell requiring a verbal component can be cast within a 30-foot radius of the chime unless the caster can make a concentration check (DC 15 + the spell's level).
Cost 8,400 gp