Grim Irony

Grim Irony is a passive feature that can incapacitate both the target and user in fits of laughter.

Description

Whenever this weapon lands a critical hit, both target and attacker must succeed a Wisdom Saving Throw, or be affected by  fits of laughter.

Condition: Hideous Laughter

 Hideous Laughter

Duration: 2 turns

 WIS Save (DC 17)

• 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.

 Prone, Unconscious

How to learn

Granted by the weapons:

• Clown Hammer

Used by creatures:

• Dribbles

Notes

• The wielder can get immunity to the  Hideous Laughter condition from the critical hit effect via:
  •  Face-Painting Kit
  •  Sarevok's Horned Helmet