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Lets say the infamous Sound type is introduced next gen; with these type matchups, would it save/break/do nothing to the metagame or just overall balance?
Sound
Off:
SE- water, flying, ghost, ground
NVE- steel, rock, grass
X0- electric
Def:
SE- ice, psychic
NVE- electric, fairy
X0- sound
Obviously type retcons for existing pokemon, like Exploud, Chatot and Kricketune would happen.