Littlemon team #21 to beat Alpha Sapphire E4 + Champ deathless & reliable strat.
Level cap, no items, etc.
Just a bunch of guys that were in the boxes. Ended up being a support / debuff team for Teddiursa to sweep.
Spinarak has Toxic Spikes & Sticky Web. Scatterbug was actually useful with Compound Eyes & Stun Spore. Tympole learns Growl & Confide, that's helpful. Teddiursa dominates with Brick Break, Shadow Claw and Return.

Nothing special here. Target the lead with debuffs so Teddiursa can enter and put up three Swords Dances and boom.
A funny thing happened though. On a test run I targeted Phoebe's Banette with a shitload of moves like Confide, Stun Spore, Flash, Leech Seed etc so she actually switched. I've done hundreds of tries and test runs so far on this challenge, and this barely ever happens. I lol'd when she had had enough of my bullshit.

All time top KO list:
30 / 30: Tentacool
29: Teddiursa
28: Pawniard
27: Tyrunt
23: Stunky
20: Mienfoo
14 - 17: Gastly, Munchlax, Cranidos, Sneasel, Scyther
11 - 13: Pancham, Shellos, Doduo, Staryu, Wailmer, Torchic, Slugma, Riolu