Binding allows a Character to extend the duration of a Spirits service. A bound spirit does not vanish to the Meta Planes after sunset/sunrise but instead after the next new moon/full moon.
A Binding Test requires Reagents worth the Spirits Force * 100 as well as a Ritual Location with a Rating equal or greater than the Spirits Force.
The Binding Test is an Opposed Test between the summoners Binding Skill and the Spirits Force. The Spirits Force*5 determines the Duration of the Test in Minutes.
If the Character wins the Test, the Spirit owes the Character one additional Service plus one more for every 10 points of Task Quality and is bound.
After the Binding test, if successful or not, the Character is affected by Drain equal to 3*Force of the Spirit.