I give it an 8. I've always liked the Fairy type idea, I never cared if it was too girly or whatever, it's just a new way to balance out the pokemon types and there are plenty of pokemon that it can fit.
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According to rumors/update, these are the advantages and disadvantages of the Fairy type.
Super effective against- -Dragon -Dark -Fighting
Vulnerable against- -Steel -Poison -Ice
Not only does the only leak we have any reason to believe say nothing about Fairy being vulnerable to Ice, but Pokémon Smash indicated that Sylveon is "good against" Ice, which I currently believe means a resistance since the leak says nothing about Fairy's resistances. And it makes sense; Ice is already a plenty good offensive type and doesn't need to be made better (could use a defensive buff though.)
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