For a possessed shaman, merely communing with the spirit world is insufficient. Instead, she invites the spirits to share her body, granting them the chance to experience corporeal existence. In return, they grant her their skills and protect her from otherworldly influence.
At 2nd level, whenever a possessed shaman fails a saving throw against a charm or compulsion spell or effect, she can attempt a new saving throw (using the original DC) at the end of her next turn as the spirits inside her attempt to regain control. If the saving throw is successful, the charm or compulsion effect ends. If the saving throw fails, she is affected as normal for the rest of the duration. This ability replaces the hex gained at 2nd level.
At 6th level, a possessed shaman is able to make room for another spirit. When choosing her wandering spirit for the day, the possessed shaman chooses one skill. The possessed shaman treats this skill as if she had a number of ranks in it equal to her shaman level, and uses her Wisdom modifier in place of the ability modifier the skill would normally use. If the skill is a class skill for her, she receives the usual +3 bonus on checks for having ranks in that skill. Each time the possessed shaman changes her wandering spirit, she can change the skill gained through this ability. These ranks do not stack with her actual skill ranks (only the higher number of ranks in the chosen skill applies). This ability replaces the wandering hex gained at 6th level.