Okay guys I CANNOT for the life of me beat this Muk.
Currently, my team is...
Houndour - 44 (For Glaceon)
Krikitune - 44 (For Espeon)
Toxicroak - 44 (For Umbreon)
Noibat - 44
Ampharos - 44
Graveler - 44
I tried the Graveler strategy that I kept finding all over google, where you get a sturdy Graveler and use Magnitude/Earthquake... but CLEARLY that's been fixed because muddy water no longer picks up electricity. At least on my game.
WHAT DO I DO?! I've been stuck here for like, 2 days and I'm ready to just throw the whole game away I'm so frustrated! :(
