Body of Earth (Su)
Source: Advanced Class Guide, p. 45
The shaman gains DR 2/adamantine.
This DR increases by 1 for every 4 levels beyond 8th the shaman possesses. In addition, as a standard action, she can cause jagged pieces of stone to explode from her body in a 10-foot-radius burst, dealing 1d6 points of piercing damage per 2 shaman levels she possesses. A successful Reflex saving throw halves this damage. The shaman can use this ability three times per day, but she must wait 1d4 rounds between uses.
True Spirit Ability: A shaman who chooses the stone spirit as her spirit or wandering spirit gains the following ability upon having access to the true version of that spirit.