>>22203998Drop Mandibuzz for Mixed Hydreigon. Best version uses Dark Pulse, Draco Meteor, Iron Tail for Killing Fairies and Superpower for breaking Steel types. If you can't find the move tutors for all that, just use a normal special one with a life orb or scarf.
I don't know what you're using Mandibuzz for, but you probably don't need it. Umbreon can already wall stuff, and nobody but Mandibuzz cares much about hazards since it's weak to Stealth Rock, so it'd just be defogging for itself.
I'd consider dropping Malamar too. Not sure what I'd replace it for, though. He's really not that good until he's used superpower once or twice. Until then ,he's a sitting duck.