TASHA'S UNCONTROLLABLE LAUGHTER

Ever since the cosmos was young and impudent, many people, called sorcerors, have been creating spells to aid their faction in battle. Many spells involved throwing fireballs and lightning bolts at people, which were effective, but generally a bad idea in close quarters, while most of them involved disabling their opponent, either by forcing them to drop their weapons, maybe making them extremely hot or cold, or by putting them in a mental state incompatible with battle readiness, usually either putting them to sleep, or by scaring them Belgiumless. Unfortunately, this only worked until you hit them. Then, one day, a sorceress named Tasha developed the most frighteningly effective spell ever created, in which the castee suddenly bursts into laughter and can't stop, even after they've been horribly maimed and have wet themselves and gotten the hiccups from laughing so hard. Tasha named it after herself, which is the only way we know her name, because shortly after its creation, she accidentally cast it on herself, and with nobody around to turn it off, she suffered a fatal heart attack, and died smiling.