>>34772870Primarina learns Shadow Ball. It's objectively better against some Ghost Types compared to Decidueye because it can deal SE to them without being weak to their attacks (Decidueye dies instantly against Mimikyu, for example, I can hardly see how it counts as an "advantage").
It destroys Team Skull's poison types thanks to Psychic, and it's good against Kahili thanks to Ice Beam.
It's also the only one that can hit ALL kahunas for Super Effective damage, STAB most of the time. Popplio has Disarming Voice for Raticate too. It's probably the best in-game overall. It's definitely not hard mode.