Transmutation
Level: Assassin 2, Druid 1, Incarnate 1, Mystic Ranger 1, Ranger 1, Urban Druid 1
Components: V, S, DF
Casting Time: 1 standard action
Range: Touch
Target: One creature/level touched
Duration: 1 hour/level (D)
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)
The subject or subjects can move through any type of terrain — mud, snow, dust or the like — and leave neither footprints nor scent. Tracking the subjects is impossible by non-magical means.
Source: Player’s Handbook (Page 259)