School enchantment (charm) [mind-affecting]; Level sorcerer/wizard 4, witch 4
Components V, S, M (mercury and phosphorus, plus powdered diamond and opal worth a total of 1,000 gp)
Saving Throw Will negates; Spell Resistance yes
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.
Pathfinder Roleplaying Game: Advanced Class Guide © 2014, Paizo Inc.; Authors: Dennis Baker, Ross Byers, Jesse Benner, Savannah Broadway, Jason Bulmahn, Jim Groves, Tim Hitchcock, Tracy Hurley, Jonathan H. Keith, Will McCardell, Dale C. McCoy, Jr., Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Sean K Reynolds, Tork Shaw, Owen K.C. Stephens, and Russ Taylor.