Sleep

[Compulsion]
Level: [Arcane 1], [General 1], [Nature 1]
Components: [S] and [V]
Casting Time: 1 Standard action
Range: Medium (100 ft. + 10 ft. per CL)
Effect: 20 ft radius centered on target
Duration: 1 minute per CL
Saving Throw: Will negates
Spell Resistance: Yes

With a wave of your hand and humming of a lullaby you put 4 HD + 2 HD per 5 CL of creatures to sleep. If they make their will save they are unaffected but the potential HD of creature affected is not lost.