>>33298994It's because every new family line this gen was given a new exclusive move or ability, minus some Alola forms and the Ultra Beasts. Komala's was Comatose, I'm sure they'll redistribute them next gen, maybe even in USM, and replace Musharna's HA Telepaty with Comatose.
I wish Comatose worked differently. The Pokémon should just always have the Sleep status on it, but can still use moves. Or, the same thing, but it isn't always alseep. That way it can spam Rest.