Combining Prime 2 with Spirit 4 – the Rank needed in order to force spirit-stuff to obey human commands – a mage could “rub the bones” of an entity by disrupting its Quintessential energies. (See Rubbing the Bones, under Energy-Work, p. 48.)

By combining Spirit 5 with Prime 5, she could disintegrate that spirit’s Quintessential form and disperse it across the landscape; that spirit could heal from such an attack, but that would take far longer than usual. (Storyteller’s discretion, based upon the power of that spirit and the successes scored by the mage.) Either way, this hurts. A LOT.