Rites du Cheval is the Endowment of the hunter conspiracy Les Mystères in Hunter: The Vigil. Spirit powers are tricky to borrow, as many spirits are unpredictable and often extremely emotional. Most spirits must be offered some sort of appeasement before they allow themselves to be used. Weak spirits most likely require a simple thanks and a small material offering, while the most powerful spirits may involve invocations or sacrifices to call down their talents. Spirits come in a variety of types, and the ways to invoke them are as diverse as the kinds that exist.