FWIW: you don't even need to be at level 30. Mustard's Kubfu has no EVs, bad AI, and a Focus Sash. It's not one-shotting you, you're probably outrunning it, and you can two-shot it easy w/ Aerial Ace or Zen Headbutt. (Remember: TRs are consistently easily obtainable in a DLC world, so you can...