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From Pathfinder Treasure Vault (Remastered), which isn't enabled.

Spark Dancer

ITEM 13
Price 2900 gp
Usage held in 1 hand
Bulk L
Category martial
Group firearm
Damage 1d4 fire
Range 60 ft.
Reload 1

This +2 greater striking pepperbox cycles through several magical cores, swapping in new ones while the previous ones cool. The gun deals fire or electricity damage, alternating with each attack as it rotates cores. Arcadian gunslingers liken the rotating cores to a group of dancers sharing the spotlight.

Activate (manipulate)
Frequency once per day

Effect The spark dancer casts either Fireball or Lightning Bolt, depending on whether the current core would deal fire or electricity damage, as a 7th-rank arcane spell (DC 30 basic Reflex).
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