I made this team a while ago and made it to Top 500 (Rank 405 when I reached top ladder) on my main account (KingMagikarp3rd) and 1455 on my alt (PrinceMagikarp3rd) after an hour or so of playing.
Calyrex-Shadow @ Choice Scarf
Ability: As One (Spectrier)
Tera Type: Ghost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Dark Pulse
- Astral Barrage
- Psyshock
- Energy Ball
Main attacker and primary threat. Tera Ghost Astral Barrage shreds through anything and 2HKOs max SpDef max HP Ho-Oh at +1. Energy Ball, Pulse and Shock are just coverage, Pulse is an answer to a possible Tera Normal Caly-S, Energy Ball for Scarf Water Spout Kyogre and Psyshock for any Special Walls.
Eternatus @ Power Herb
Ability: Pressure
Tera Type: Fire
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Meteor Beam
- Sludge Wave
- Flamethrower
- Dynamax Cannon
Another heavy hitter. Power Herb Meteor Beam is an Electro Shot in rain. Sludge Wave And D-Cannon are main attacks with Flamethrower coverage.
Miraidon @ Choice Scarf
Ability: Hadron Engine
Tera Type: Fairy
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
- Electro Drift
- Draco Meteor
- Overheat
- U-turn
I faced Chien-Pao quite often, so I decided to go against the traditional Specs Miraidon by using Modest Scarf Miraidon to outspeed common Chien-Pao sets. Tera Fairy hard counters Scarf Koraidon.
Ting-Lu @ Leftovers
Ability: Vessel of Ruin
Tera Type: Steel
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
- Payback
- Heavy Slam
- Fissure
- Protect
Ultimate Caly-S counter imo. Eats its STABs for breakfast and hits hard with Payback. Doesn't even need to get hit to KO Calyrex. Heavy Slam for Fairies and Fissure to get rid of tanky non-flying types. Based around this Ting-Lu set I posted a long while ago: https://pokemondb.net/pokebase/413396/what-is-a-good-moveset-for-ting-lu
Ho-Oh @ Heavy-Duty Boots
Ability: Regenerator
Shiny: Yes
Tera Type: Grass
EVs: 252 HP / 4 Atk / 252 SpD
Adamant Nature
- Sacred Fire
- Earthquake
- Brave Bird
- Recover
Tanky and hits hard. Walls Caly-S without SpA buffs and hits hard in return. Sacred Fire shuts down Koraidon with burn. Bird kills off Urshifu and Koraidon. EQ is coverage. Recover is reliable healing.
Clodsire @ Leftovers
Ability: Unaware
Tera Type: Dark
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Haze
- Stone Edge
- Protect
- Recover
My answer to minimize gimmicks if I'm too slow to stop them with any of the others. Haze kills off stat buffs. Stone Edge lets me hit Ho-Oh nicely. Protect and Recover for healing paired with Lefties. Tera Dark prevents Clod from dying to Stored Power.
I'm aware I need to get hazards on here, but I'm not sure on what to swap out to get hazards, since I have an answer to nearly everything with this team.