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Tasha's Hideous Laughter
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Tasha's Hideous Laughter is a level 1 enchantment spell. It allows spellcasters to send a targeted creature into a fit of laughter, falling 
Prone.
Description
Leave a creature 
Prone with laughter, without the ability to get up.
The creature must have an Intelligence of 5 or more.
The target can try to shake off the effect each time it takes damage.
Properties
- Cost
Action + 
Level 1 Spell Slot- Details
WIS Save (Spell save DC)
Range: 18 m / 60 ft
Concentration
At higher levels
Casting this spell at a higher level grants no additional benefit.
Technical details
UIDTarget_HideousLaughter
Condition: Hideous Laughter
Hideous Laughter 
Duration: 10 turns
Spell save DC Wisdom saving throw
- Can't move or take
Actions, 
Bonus Actions, or 
Reactions, and has 
Disadvantage on Strength and Dexterity saving throws. - Attacks against a Prone creature have
Advantage if they're made within 3 m / 10 ft of the creature. - At the end of its turn or when it takes damage, the entity can try to shake off the effect.
How to learn
Classes:
- Class level 1: Bard, Wizard, The Great Old One, and Draconic Bloodline (Copper/Acid Ancestry)
- Class level 3: Arcane Trickster, and Eldritch Knight
Other ways to learn:
- Learned as a quest reward for completing
Help the Cursed Monk and choosing to bear 
Shar's curse.
- This version is a separate spell; while it does not expend a spell slot when used, it can only be cast once per Long rest.
- Wizards can scribe a
Scroll of Tasha's Hideous Laughter to their spellbooks.
Notes
- Despite the claim made in the spell's description, a creature affected by Hideous Laughter is not technically considered Prone for the purposes of interactions with other mechanics. For example,
Hook Horrors may 
Multiattack: Prone a Prone target, but not a target affected by Hideous Laughter. - Hideous Laughter is also not considered an incapacitating condition. This means it is one of the few incapacitating effects that bypasses
Legendary Resistance: Incapacitation. - The incantation for Tasha's Hideous Laughter is Risum Peniatis ("Laugh out loud").
