Here's two set I have theorized with Dipplin as I couldn't make a team with it yet.
Dipplin (M) @ Eviolite
Ability: Sticky Hold
Tera Type: Fairy
EVs: 248 HP / 244 Def / 16 SpD
Bold Nature
IVs: 0 Atk
- Recover
- Infestation
- Energy Ball
- Dragon Breath
A set like this on a semi stall which keeps hazards off reliably.
Or
+2 252 Atk Technician Tera Normal Fezandipiti Tail Slap (5 hits) vs. 252 HP / 0 Def Great Tusk: 380-450 (87.5 - 103.6%) -- approx. 25% chance to OHKO after Stealth Rock
+2 252 Atk Technician Tera Normal Fezandipiti Tail Slap (5 hits) vs. 252 HP / 252+ Def Toxapex: 255-305 (83.8 - 100.3%) -- approx. 93.8% chance to OHKO after Stealth Rock