The target of Tasha's hideous laughter perceived everything as extremely funny and laughed so uncontrollably that it became impossible to even stand up. The effect of the spell lasted for up to one minute, as long as the spellcaster kept concentrating on the spell or until the target managed to shake off the effect. Ending the spell's effect was also easier if the target was injured in any way.
The spell required verbal, somatic, and material components. The materials required were a small feather that needed to be waved in the air and tiny tarts that needed to be thrown in the target's direction.
By the 1360s DR it was yet rarely found in the magical communities of both Faerûn and Zakhara.[note 1] To Zakharans, always reluctant to acknowledge ajami names and accomplishments, the spell was known as uncontrollable hideous laughter, and counted among the spells of the universal province.
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