Touch of Acid (Su)
Source: Advanced Class Guide, p. 45
As a standard action, the shaman can make a melee touch attack that deals an amount of acid damage equal to 1d6 points + 1 point for every 2 shaman levels she possesses. A shaman can use this ability a number of times per day equal to 3 + her Charisma modifier. At 11th level, any weapon she wields is treated as a corrosive weapon. Greater Spirit Ability: A shaman who chooses the stone spirit as her spirit or wandering spirit gains the following ability upon having access to the greater version of that spirit.