[Refplace]

PCs are generally going to object to a totally useless spell as a waste of points, especially if forced to take it.
Heck, some object to spells they consider useless just being in GURPS Magic.
So make it have some utility.
My initial idea is 1 FP and either SSR range penalties as if it were a Missile spell instead of a Regular spell or give it a minute duration so it can be used on multiple objects.