Symbol Of Laughter

Enchantment (Charm) [mind-affecting]
Level: Artificer * 4, Sorcerer */Wizard * 4, Warlock * 4
Components: V, S, M (mercury and phosphorus, plus powdered diamond and opal worth a total of 1,000 gp)
Casting Time: 10 minutes
Range: 0 ft. (see text)
Effect: one symbol
Duration: see text
Saving Throw: Will negates
Spell Resistance: yes
  This spell functions as symbol of death, except that all creatures within 60 feet are affected with uncontrollable laughter (as hideous laughter) for 1 round per Caster Level.
  Unlike symbol of death, symbol of laughter has no hit point limit; once it is triggered, a symbol of laughter remains active for 1 minute per Caster Level.
  Symbol of laughter can be made permanent with a permanency spell by a caster of 10th level or higher at a cost of 5,000 gp.