The material below is Open Game Content from a 3PP Source
CLUB AND SPEAR
In your hands, a club or spear is a much more dangerous weapon.
Prerequisites: Mahrog, Proficient with weapon, Str 15
Benefit: Increase the amount of damage dealt by a club, greatclub, shortspear, longspear, and spear by one step (for example, 1d6 becomes 1d8) to a maximum of 1d8 (2d6 if the weapon is two-handed).