pf2e.fyi
From Pathfinder #212: A Voice in the Blight, which isn't enabled.

Fiendbreaker (Heroic)

ITEM 20
UNIQUEAPEXARTIFACTDIVINEINTELLIGENTINVESTEDMAGICALMONKSTAFFTWO-HAND-D8
Usage held in 1 hand
Bulk 1
Category simple
Group club
Damage 1d4 bludgeoning

Perception +35; precise low-light vision and hearing within 30 feet

Communication telepathy (partner only)

Skills Demon Lore +33, Diplomacy +34, Religion +35

Int +5, Wis +7, Cha +6

Will +35

The stately echo of Jininsiel, the woman who guided her people through the Darklands to escape the devastation of Earthfall, causes Fiendbreaker to softly shimmer with a silvery radiance equivalent to that of candlelight. Fiendbreaker can activate or deactivate this radiance as a free action once per round on her partner's turn. Fiendbreaker's telepathic voice is calm and soothing, seeking to support her partner's decisions with compliments or warnings against overconfidence as needed.

Fiendbreaker functions as a +3 major striking holy high-grade cold iron staff. While wielding the staff, you gain a +3 circumstance bonus to checks to Recall Knowledge about any sort of fiend.

Activate Cast a Spell
Frequency once per round
Effect You expend a number of charges from the staff to cast a spell from her list. Fiendbreaker can use this activation only if you're holding the staff and only if you haven't used Fiendbreaker to Cast a Spell this round. Likewise, if Fiendbreaker Casts a Spell from the staff, you can't activate the staff to Cast a Spell this round.
Activate—Restore Mind (concentrate)
Frequency once per hour
Effect Fiendbreaker attempts to counteract an ongoing mental affect you're suffering from, with a counteract rank of 9th and a +25 modifier to the roll (or a +30 modifier if the source of the mental effect on you was created by a fiend).
Pathfinder #212: A Voice in the BlightORC