Ring of Blades

You conjure a horizontal ring of swirling metal blades around you. The ring extends in a 5-foot Radius around you, and it moves with you. Whenever a creature enters the area for the first time each turn or starts its turn in the area, it takes 4d4 Slashing damage. The blades are considered Silvered for the purpose of overcoming Resistance and Immunity.   At Higher Levels. When you cast this spell using a higher level spell slot, increase the damage by 2d4 for each slot level above its base level.
 

Conjuration (Creation) Level: Cleric 3, Components: V, S, M, Casting Time: 1 standard action Range: Personal Target: You Duration: 1 minute/level   As you twirl the small dagger in your hand, it slowly fades from existence and is replaced by dozens of larger blades swirling about you in a horizontal ring.   This spell conjures a horizontal ring of swirling metal blades around you. The ring extends 5 feet from you, into all squares adjacent to your space, and it moves with you as you move. Each round, at the beginning of your turn, and also when you cast the spell, the blades deal 1d6 points of damage +1 point per caster level (maximum +10) to all creatures in the affected area.   Spell resistance does not apply to the damage dealt, but a creature's damage reduction does apply. The blades are treated as magic, silvered, and slashing for the purpose of overcoming damage reduction.   Material Component: A small dagger.