I really like Infestation. The animation is so gross, but so satisfying to watch smh. ._.
Attract ranks second because I'm a hopeless romantic and think that it looks cute with the hearts floating around
Shadow Ball. No idea why, but I just love seeing a great big, random ball of purple-hued darkness pound right into an enemy's face. The sound effect is amazing as well.
Also Freeze-dry. And Scald. Because why not? I thought that originally that Emboar learned Scald since it was introduced in Black/White. But when I tried looking to see if he learned it in SuMo since I was looking for other fire types that might learn it as well, it was actually removed? At least, on serebii it was. So I'm not sure. :c
Metronome... because I think it's fun not knowing what will happen. It can be something amazing that helps you win like a strong super effective move, or something awful that makes the user faint like Explosion or Lunar Dance, or it can even just hilariously be Splash.