Dictum

Dictum
(Player's Handbook v.3.5, p. 220)

Evocation [Lawful, Sonic]
Components: V,
Casting Time: 1 standard action
Range: 40 ft.
Area: Nonlawful creatures in a 40-ft.-radius spread centered on you
Duration: Instantaneous
Saving Throw: None or Will negates; see text
Spell Resistance: Yes

Any nonlawful creature within the area of a dictum spell suffers the following ill effects.
HD Effect
Equal to caster level Deafened
Up to caster level -1 Slowed, deafened
Up to caster level -5 Paralyzed, slowed, deafened
Up to caster level -10 Killed, paralyzed, slowed, deafened

The effects are cumulative and concurrent. No saving throw is allowed against these effects.
Deafened: The creature is deafened for 1d4 rounds.
Slowed: The creature is slowed, as by the slow spell, for 2d4 rounds.
Paralyzed: The creature is paralyzed and helpless for 1d10 minutes.
Killed: Living creatures die. Undead creatures are destroyed.

Furthermore, if you are on your home plane when you cast this spell, nonlawful extraplanar creatures within the area are instantly banished back to their home planes. Creatures so banished cannot return for at least 24 hours. This effect takes place regardless of whether the creatures hear the dictum. The banishment effect allows a Will save (at a -4 penalty) to negate.

Creatures whose HD exceed your caster level are unaffected by dictum.