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From Pathfinder Rage of Elements, which isn't enabled.

Staff of Metal (Greater)

ITEM 10
MAGICALMETALSTAFFTWO-HAND-D8
Price 900 gp
Usage held in 1 hand
Bulk L
Category simple
Group club
Damage 1d4 bludgeoning

This cylindrical iron staff has colored segments on both ends, one red and one blue. When you Strike with the staff, you gain a +1 circumstance bonus to the attack roll if the target is wearing metal armor or is primarily made of metal.

Activate Cast a Spell
Effect You expend a number of charges from the staff to cast a spell from its list.
Pathfinder Rage of ElementsOGL