Temporal anchor

The caster tethers him or herself to a specific point in space and time by creating a magical anchor. For the spell duration the caster can move and act freely,  doesn't age and doesn't need air, water or food. When the spell ends or when the caster stops concentrating on it, he or she is instantly teleported back to the point where the anchor was placed. The spell ends early if the caster leaves the plane it was casted on.