I wiped to Korrina today on my run. Breloom was dealt easily enough with Hypno, and Pyroar somehow managed to tank a dark pulse and vacuum wave from Lucario before finishing it off with flamethrower. I send out my Masquerain to get the intimidate on Lopunny, and she baton passes to Pangoro, giving it the intimidate drop. I then send out my underleveled Illumise to heal stall it. I lock it into thunder punch and heal a few times before Illumise gets paralyzed. The encore ends and then it uses ice punch, so I use the opportunity to sacrifice Illumise and get another intimidate. Masquerain gets it into red before the encore ends. Korrina heals, and I send in Sigilyph to set up reflect, with Pangoro wasting a sucker punch turn. I send Masquerain out, getting a quadruple intimidate, and kill that tanky Pangoro with air cutter. She sends out Hawlucha and I switch into Blastoise to tank the flying gem acrobatics and give it chip damage with the rocky helmet and the reflect wears off. I let Blastoise stay in a turn, with both him and Hawlucha in low yellow health. I send in Sigilyph hoping to get another reflect up, but Hawlucha outspeeds and kills it. I send Blastoise back out and then switch to Hypno. He tanks a flying press and then dies to acrobatics. I send Masquerain back out and get intimidate off before he gets killed by acrobatics. Hawlucha kills Pyroar and then Blastoise, succumbing to chip damage before the battle ends.
Still the farthest I've gotten in a nuzlocke.