Deep Magic Volume 2 (p.168)
Doom of Laughter
3-level Enchantment
Casting Time: 1 action
Range/Area: Self (10 ft. radius)
Components: Verbal, Somatic, Material
Materials: a chicken doll
Duration: Concentration, 1 minute
Attack/Save: WIS Save
Damage/Effect: Control
All creatures within range (including you) perceive everything as hilariously funny and fall into fits of laughter if this spell affects them. The targets must make a Wisdom saving throw. You must also make this save. On a failed save, targets fall prone, becoming incapacitated and unable to stand up for the duration. Creatures with an Intelligence score of 4 or less are not affected. At the end of each of its turns, and each time it takes damage, a target can make another Wisdom saving throw. The target has advantage on the saving throw if it’s triggered by damage. On a success, the spell’s effect ends.
Available for: Bard, Wizard