Night Of Blades

Evocation
Level: Antipaladin* 4, Artificer * 3, Hunter * 4, Inquisitor * 3, Ranger * 4, Sorcerer */Wizard * 3, Summoner * 3
Components: V, S
Casting Time: 1 Standard Action
Range: close (25 ft. + 5 ft./2 levels)
Effect: wall of blades up to 10 ft. long/level and 10 ft. tall
Duration: 1 minute/level (D)
Saving Throw: Reflex half
Spell Resistance: yes
  Useful primarily to those who skulk in the Darkness, this spell is a temporary trap for the unwary. You create an immobile wall of tiny black blades that whirl and tear into creatures like a cyclone.
  Anyone who enters this space takes 1d4 points of damage per Caster Level (maximum 10d4), though a successful Reflex Save halves the damage. The spell cannot be cast so that it appears in a space already occupied by Small or larger creatures.