Blade Barrier

School: evocation
Circle: divine 6th, occult 6th
Spell Components: V, S 
Action Time: 1 action
Range: medium
Shape: radius (medium)
Targeting: all (radius)
Base Duration: instant
Saving Throw: reflex half
Spell Resistance: no
Ritual Components: n/a

Causes a field of slashing blades to strike around the target area, dealing 1d6 slashing damage/4 levels per round for 3d3+1 rounds. If caster has greater spell focus: evocation, instead deals 1d8 slashing damage/4 levels per round.