What moves change between Pokemon in Legends: Z-A?

Question

Like how Blastoise using Hydro Pump shoots two stream out of it's instead of one

Comments

I only know of one, mega greninja’s water shuriken and how instead of 5 mini stars, it fires off one big star

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In addition, Mega Excadrill's Drill Run has a unique animation. Instead of using a drill effect, it combines its 3 metal blades to form a drill and spins so fast it starts to turn blue.

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Ok, interesting, so it's mainly signature moves and stuff

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Drill run isn’t a signature move many Pokémon can learn it