Cloudwalkers

With a kiss blown to each subject, you create gaseous pads of cloudstuff on their feet, allowing them to walk on the clouds.

(Spell Compendium, p. 49)

Originally posted on D&D tools

Transmutation
Level: Druid 7, Windstorm 6,
Components: V, S, DF,
Casting Time: 1 standard action
Range: Touch
Target: One creature/level
Duration: 10 minutes/level (D)
Saving Throw: Reflex negates (harmless)
Spell Resistance: Yes (harmless)

Each subject of the spell can move with a fly speed of 60 feet (perfect maneuverability), but only outdoors. To touch the earth again, a subject must use a standard action to shake off the cloudstuff, which ends the spell for that creature. You can dismiss the spell, but only for all subjects at once an  act that can have significant consequences for subjects already in the air.