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Mega Mawile is one of the strongest breakers in the OU metagame. Solid coverage options like Knock Off, Ice Punch, Fire Fang, and Thunder Punch alongside a setup move in Swords Dance make Mega Mawile impossible to deal with defensively, while its access to Sucker Punch gives it the ability to...
Just wanted to point out that thunder punch on lucha doesnt get the boost from terrain cause he's a flying 'mon, and it doesnt really offer any good coverage