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You're using it wrong, OP.
It has shit defensive typing and only passable defenses. You have to force switches and u-turn to bring it in, or double switch it in. After that a substitute set can punish switch ins trying to capitalize on your HJK or whatever and you basically 1 hit fucking everything, so if you can get it in it will kill shit dead.
Also you fuckin NEED fire punch for Aegislash who gets fucked up by it, so run that.