I was just playing Pokemon Y and I encountered a Klefki. I was just like: Pssh. It's that little key set. I've never fought one. Hmm. Maybe it's good. AW CRAP IT OHKO'ed FLYGON! Calm down, me. ULTRA BALL, GOOOOO! Then I trained it to level 50, started using it in competitive, and sweeped like a boss.