Incorporeal Form

(Ghostwalk, page 36, DnD 3.0)

[Ghost, Traveler]

You can become incorporeal even when you would otherwise be forced to manifest fully.

Benefit

When manifested fully, as a standard action, you can make a Will saving throw (DC 15) to become incorporeal for 1 round. If you revert to being manifested fully in a material object (such as a solid wall), you are shunted off to the nearest open space and take 1d6 points of damage per 5 feet that you so travel.

Normal

A ghost without this feat is normally incorporeal, but is manifested fully within the borders of the Manifest Ward and cannot overcome the effect without magic.