The Spirit-Strike
Rote · Mage
Sufficient expertise with the spirit-realm allows a martial artist to strike ghosts and other entities. Story-wise, this feat channels chi through the practitioner’s living body, transcend-ing the limits of physical existence in order to punch out a spirit’s lights.
Game-wise, Spirit 2 lets a mortal touch an ephemeral entity long enough to land a physical blow. Spirit 3 lets a physical mage harm spirits as if he was using Life-Sphere magick, and Entropy 3/ Prime 2 lets a mage affect ghosts (but not other Umbral entities) as if she was using Life-Sphere magick.
Given the element of chi energy involved, these feats require the Prime 2 component, and so the spirit-strike employs either Spirit 2/ Prime 2, Spirit 3/ Prime 2, or Entropy 3/ Prime 2. If you’re using the latter feat, though, don’t forget about the nasty effects that Entropy has upon ghosts… (See Spirit Combatants