OshyHikari
c l a r i t y
It’s because Smart Strike’s Japanese name is “Smart Horn”, which is why its learnset is mostly limited to Pokémon with visible horns, and some outliers like Mew, Togekiss and Kartana. Tusks aren’t exactly the same as horns.If there's something odd about Copperajah, it's how it doesn't learn Smart Strike, when its tusks could be usable.
Smart Strike (move) - Bulbapedia, the community-driven Pokémon encyclopedia
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