>>16639664Multi-hit doesn't work on Shedinja, but there's certainly more than enough reasons why this wouldn't work unless your opponent is a dumbfuck.
OP forgot: Ability Changing moves, Leech Seed, Tricking Black Sludge/Flame Orb/Toxic Orb or tricking and setting weather, Knock Off and weather, Destiny Bond, Mummy, Ghost-type Curse, Nightmare, Encore and Disable or other Struggle gimmicks, Perish Song, and Wonder Room and Weather.