Eternatus @ Leftovers  
Ability: Pressure  
Level: 50  
Tera Type: Dark  
EVs: 252 HP / 76 Def / 4 SpA / 124 SpD / 52 Spe  
Calm Nature  
IVs: 0 Atk  
- Toxic  
- Cosmic Power  
- Flamethrower  
- Recover

Ting-Lu @ Rocky Helmet  
Ability: Vessel of Ruin  
Level: 50  
Tera Type: Water  
EVs: 252 HP / 12 Def / 244 SpD  
Careful Nature  
- Protect  
- Stealth Rock  
- Sand Tomb  
- Ruination

Dondozo @ Aguav Berry  
Ability: Oblivious  
Level: 50  
Tera Type: Poison  
EVs: 244 HP / 4 Atk / 4 Def / 252 SpD / 4 Spe  
Careful Nature  
- Protect  
- Liquidation  
- Yawn  
- Fissure

Calyrex-Ice @ Sitrus Berry  
Ability: As One (Glastrier)  
Level: 50  
Tera Type: Water  
EVs: 252 HP / 116 Atk / 4 Def / 132 SpD / 4 Spe  
Adamant Nature  
- Protect  
- Leech Seed  
- Glacial Lance  
- Trick Room

Grimmsnarl @ Light Clay  
Ability: Prankster  
Level: 50  
Tera Type: Steel  
EVs: 252 HP / 140 Def / 116 SpD  
Careful Nature  
IVs: 0 Atk  
- Reflect  
- Light Screen  
- Thunder Wave  
- Foul Play

Ditto @ Focus Sash  
Ability: Imposter  
Level: 50  
Tera Type: Ghost  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Transform

stall tern

Eternatus lives Miraidon Draco Meteor if you Tera (244+ SpA Choice Specs Hadron Engine Miraidon Draco Meteor vs. 252 HP / 124+ SpD Tera-Dark Eternatus: 208-246 (84.2 - 99.5%) -- guaranteed 2HKO after Leftovers recovery). Outspeeds the 4 Speed bulky Miraidons/Koraidons and a bunch of other things to let you recover/Cosmic Power before you take a hit. Tera Dark dodges Prankster Taunt/Encore. Ting-Lu is heavily invested into Special bulk. Rocky Helmet to punish Urshifu chip. Tera Water could be Tera Poison or Tera Fairy for good neutral types. Dondozo is also mostly special bulk. Liquidation could be Wave Crash if you want to snipe Flutter Manes. Tera Poison as a good neutral type and resists Grass. Caly-Ice can't one shot Amoonguss consistently at 252 Atk Adamant, so I just went down to a good bump number to get a bunch of SpDef EVs. Tera Water for Kyogre + Caly Ice teams. Grimmsnarl is mostly self-explanatory. Tera Steel covers the weaknesses, Foul Play because of big special attackers and Incin being around (Sucker Punch is a possibility for Caly-Shadow). Ditto is Tera Ghost to dodge Fake Out while being an offensive revenge sweeper. The spread + speed IV are for the incredibly rare Ditto mirror (last Struggle wins!).

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