So really if you gave lets say a Hydreigon with a very high special attack a Hyper Beam, this move won't get STAB and will never be super effective against any opponent and therefore is only reliable for it's base power.
The only useful Normal type attack moves seem to be Quick Attack and Extreme Speed for pokemon of a different type for a low HP quick kill, but that's it.
That's why I discount all normal type attack moves unless I am using a Normal type pokemon like Porygon-Z for example.
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