Spell Details
Casting Time
Turn
Range
Self
Duration
Sustained, up to 30 minutes, plus 5 minutes per caster level
Target
Self
Saving Throw
None
Effect
You transform your body into pure ethereal energy, becoming a ghost-like entity. While in this form, you can pass through solid objects and are immune to physical weapon damage (but spells and magical attacks still affect you normally). You cannot make physical attacks while in this form.
Scaling
At 9th level, you can also pass through magical barriers and affect the material world more directly.
Special Notes
The spell ends if you take damage from magical sources or if you lose focus.