The caster points to the elemental spirit.

The caster can bind an elemental spirit (which must have already materialised) to him. If this is done, the elemental spirit follows any command of the caster. If the elemental spirit is already bound, the caster can only take over the elemental spirit with a magic duel by taking over the foreign spell. The caster binds the elemental spirit for (power+__magic level)*2 minutes.