D20:Metamagic Rod Magic Rod

Metamagic Rods: Metamagic rods hold the essence of a metamagic feat but do not change the spell slot of the altered spell. All the rods described here are use-activated (but casting spells in a threatened area still draws an attack of opportunity). A caster may only use one metamagic rod on any given spell, but it is permissible to combine a rod with metamagic feats possessed by the rod?s wielder. In this case, only the feats possessed by the wielder adjust the spell slot of the spell being cast.
Possession of a metamagic rod does not confer the associated feat on the owner, only the ability to use the given feat a specified number of times per day. A sorcerer still must take a full-round action when using a metamagic rod, just as if using a metamagic feat he possesses.
Lesser and Greater Metamagic Rods: Normal metamagic rods can be used with spells of 6th level or lower. Lesser rods can be used with spells of 3rd level or lower, while greater rods can be used with spells of 9th level or lower.
Metamagic, Empower: The wielder can cast up to three spells per day that are empowered as though using the Empower Spell feat.
Strong (no school); CL 17th; Craft Rod, Empower Spell; Price 9,000 gp (lesser), 32,500 gp (normal), 73,000 gp (greater).
Metamagic, Enlarge: The wielder can cast up to three spells per day that are enlarged as though using the Enlarge Spell feat.
Strong (no school); CL 17th; Craft Rod, Enlarge Spell; Price 3,000 gp (lesser), 11,000 gp (normal), 24,500 gp (greater).
Metamagic, Extend: The wielder can cast up to three spells per day that are extended as though using the Extend Spell feat.
Strong (no school); CL 17th; Craft Rod, Extend Spell; Price 3,000 gp (lesser), 11,000 gp (normal), 24,500 gp (greater).
Metamagic, Maximize: The wielder can cast up to three spells per day that are maximized as though using the Maximize Spell feat.
Strong (no school); CL 17th; Craft Rod, Maximize Spell feat; Price 14,000 gp (lesser), 54,000 gp (normal), 121,500 gp (greater).
Metamagic, Quicken: The wielder can cast up to three spells per day that are quickened as though using the Quicken Spell feat.
Strong (no school); CL 17th; Craft Rod, Quicken Spell; Price 35,000 gp (lesser), 75,500 gp (normal), 170,000 gp (greater).
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).

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System Reference Document -> Magic Items: Rods