Ghost Ride( Ghostwalk, p. 33)
You can hide within the physical body of a living creature, perceiving the world through its senses, but without the ability to control the host.
As a standard action, you can attempt to inhabit the physical body of a living creature. You must enter your target's space, which provokes an attack of opportunity from the target. The target may resist with a Will saving throw (DC 10 + 1/2 your HD + your Cha modifier). A creature that saves against this ability is immune to your attempts to use any feat on the path of the dominator for one day. If the save is failed, your ghost body and any ghost touch equipment you carry vanishes into the target's physical body (non- ghost touch items you carry drop to the ground in the target's square). The target gets another Will saving throw every 10 minutes to throw you out of its body, causing your ghost body to appear in an adjacent space to your target. This is a mind-affecting ability. You may use this ability a number of times per day equal o your Charisma modifier (minimum 1).
Unlike magic jar, you do not control the target, but simply ride along in the target's body. You see, hear, smell, feel, and taste what the subject does. You may remain within a host for a number of minutes equal to 10 X your Hit Dice, after which you are expelled automatically. When you leave a body, any ghost touch equipment you were carrying with you at the start of the possession reforms with your ghost body.
You may use this feat only on creatures of the same type as you (humanoids may reside only in humanoids, for example).