Invisibility Sphere (Token Cost: Free)

Invisibility Sphere
(Player's Handbook v.3.5, p. 245)

Illusion (Glamer)
Components: V, S, M,
Casting Time: 1 standard action
Range: Personal or touch
Area: 10-ft.-radius emanation around the creature or object touched
Target: You or a creature or object weighing no more than 100 lb./level
Duration: 1 min./level (D)
Saving Throw: Will negates (harmless) or Will negates (harmless, object)
Spell Resistance: Yes (harmless) or Yes (harmless, object)

This spell functions like invisibility, except that this spell confers invisibility upon all creatures within 10 feet of the recipient. The center of the effect is mobile with the recipient.

Those affected by this spell can see each other and themselves as if unaffected by the spell. Any affected creature moving out of the area becomes visible, but creatures moving into the area after the spell is cast do not become invisible. Affected creatures (other than the recipient) who attack negate the invisibility only for themselves. If the spell recipient attacks, the invisibility sphere ends.