Piston maul, gnome
An alchemically fired piston in the head of this two-handed hammer strikes targets with astounding force. Successful sunder attacks made with a piston maul deal an additional 4 points of damage. A piston maul requires a thunderstone to function; otherwise, it functions as a greatclub. Inserting a thunderstone into the weapon's compartment is a standard action, and powers the weapon for 24 hours, after which the thunderstone is consumed.
- Adventurer's Armory 2
- Gnomes of Golarion
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