srd
SRD
Metamagic, Silent: The wielder can cast up to three spells per day without verbal components as though using the Silent Spell feat.
Strong (no school); CL 17th; Craft Rod, Silent Spell; Price 3,000 gp (lesser), 11,000 gp (normal), 24,500 gp (greater).
Open Game Content from the System Reference Document 3.5, used under the Open Game License 1.0a.