Miraidon @ Magnet  
Ability: Hadron Engine  
Level: 50  
Tera Type: Electric  
EVs: 252 HP / 68 Def / 84 SpA / 4 SpD / 100 Spe  
Modest Nature  
- Electro Drift  
- Draco Meteor  
- Volt Switch  
- Protect  
84+ SpA Magnet Hadron Engine Tera Electric Miraidon Electro Drift vs. 252 HP / 132+ SpD Amoonguss in Electric Terrain: 112-132 (50.6 - 59.7%) -- guaranteed 2HKO
252+ Atk Groudon Precipice Blades vs. 252 HP / 68 Def Miraidon: 174-206 (84 - 99.5%) -- guaranteed 2HKO
Outspeeds: 252+ Chi Yu

Iron Valiant @ Focus Sash  
Ability: Quark Drive  
Level: 50  
Tera Type: Ghost  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Close Combat  
- Spirit Break  
- Icy Wind  
- Wide Guard  

Ogerpon-Wellspring (F) @ Wellspring Mask  
Ability: Water Absorb  
Level: 50  
Tera Type: Water  
EVs: 252 HP / 124 Atk / 28 Def / 4 SpD / 100 Spe  
Adamant Nature  
- Ivy Cudgel  
- Horn Leech  
- Follow Me  
- Spiky Shield  
+1 252 Atk Zacian-Crowned Behemoth Blade vs. 252 HP / 28 Def Ogerpon-Wellspring: 79-93 (42.2 - 49.7%) -- guaranteed 3HKO
252 SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 4 SpD Ogerpon-Wellspring in Electric Terrain: 156-184 (83.4 - 98.3%) -- guaranteed 2HKO
Outspeeds: 252 Groudon/Kyogre

Gholdengo @ Metal Coat  
Ability: Good as Gold  
Level: 50  
Tera Type: Water  
EVs: 252 HP / 4 Def / 140 SpA / 4 SpD / 108 Spe  
Modest Nature  
IVs: 0 Atk  
- Make It Rain  
- Shadow Ball  
- Nasty Plot  
- Protect  
+1 252 Atk Zacian-Crowned Behemoth Blade vs. 252 HP / 4 Def Gholdengo: 73-87 (37.6 - 44.8%) -- guaranteed 3HKO
252 SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 4 SpD Gholdengo in Electric Terrain: 163-193 (84 - 99.4%) -- guaranteed 2HKO
Outspeeds: -2 252+ Choice Scarf Lando-T

Landorus-Therian @ Assault Vest  
Ability: Intimidate  
Level: 50  
Tera Type: Flying  
EVs: 12 HP / 132 Atk / 4 Def / 108 SpD / 252 Spe  
Jolly Nature  
- Stomping Tantrum  
- Tera Blast  
- Rock Tomb  
- U-turn  
252 SpA Life Orb Hadron Engine Miraidon Draco Meteor vs. 12 HP / 108 SpD Assault Vest Landorus-Therian: 140-165 (84.3 - 99.3%) -- guaranteed 2HKO
Outspeeds: 252+ Groudon/Kyogre

Chi-Yu @ Choice Scarf  
Ability: Beads of Ruin  
Level: 50  
Tera Type: Ground  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Heat Wave  
- Overheat  
- Dark Pulse  
- Tera Blast