In one of the "red" plazas, I think it's magenta, at one of the main exits is a Beauty Amie. She only appears there at night and it's not guaranteed though it's common enough. She gives you destiny knots every time you defeat her.
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My current Pokemon team consists of:
Volcarona @ Leftovers
Ability: Flame Body
EVs: 204 Def / 252 HP / 52 Spd
Bold Nature
- Quiver Dance
- Roost
- Will-O-Wisp
- Heat Wave
Klefki @ Focus Sash
Ability: Prankster
EVs: 252 Def / 252 HP / 4 Atk
Impish Nature
- Thunder Wave
- Foul Play
- Safeguard
- Spikes
Tyranitar @ Leftovers
Ability: Sand Stream
Shiny: Yes
EVs: 252 SDef / 248 HP / 8 Atk
Careful Nature
- Crunch
- Protect
- Stone Edge
- Thunder Wave
Charizard @ Charizardite Y
Ability: Blaze
EVs: 252 Spd / 252 SAtk / 4 HP
Timid Nature
- Air Slash
- Fire Blast
- Solar Beam
- Roost
Gastrodon @ Leftovers
Ability: Storm Drain
EVs: 252 Def / 252 HP / 4 SAtk
Bold Nature
- Ice Beam
- Recover
- Scald
- Toxic
Forretress @ Lum Berry
Ability: Sturdy
EVs: 252 Def / 252 HP / 4 Atk
Impish Nature
- Stealth Rock
- Rapid Spin
- Explosion
- Spikes
I think it has a good number of unpredictable mons that keep people on their feet. For example, Klefki is always hard to predict, being that he can run so many things. Safeguard on him is especially hilarious as it means you can open into Smeargles and other such common status effect users and ruin their day. Barely anyone knows what Gastrodon does either. And no one expects just how deadly the drought condition Charizard Y uses is when paired with Volcarona. Tanking Garchomps like it ain't no thang.
Massive weakness to baton pass teams though, from what I've found. Other than that, I can mostly deal with everything. Got a cool 70% winrate on the team, losing mostly to baton passers since I have no taunt. I can't bring a taunt user too as I need Forretress to rapid spin away stealth rock or I'm completely crippled. I also lose very badly to teams relying heavily on status effects as I can't heal them.