>>21013238Pixilate Fairy Type STAB is the reason Mega-Gardevoir is good.
Steel/Fairy is the best defensive type in the game, granting Mawile more opportunities to switch in, neutrality to fighting and a dark resist which it would be much worse without, even with Huge Power. And it would be garbage without Play Rough to spam.
Togekiss is good in UU. Yes, not everything needs to be OU to be good. And while we're talking about other tiers, Xerneas is one of the best pokemon in ubers, Arceus-Fairy is one of the best arceus formes, Florges is the queen of UU, Granbull is great in NU, Aromatisse is a wonderful cleric in RU, a TR staple in doubles, Slurpuff is versatile as all fuck, Swirlix is banned from LC, Spritzee is a great fighting check in LC, Klefki is good enough at what it does, and Mega Altaria/Diancie/Audino are going to be fucking amazing.
Every fairy not mentioned is "meh" at best but still have valuable niches like Competitive Wigglytuff.