My new OU team once the new rules are implemented:
 
  
  
  
  
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Disruptive Lead (Pikachu) @ Focus Sash 
Ability: Static 
Tera Type: Electric 
EVs: 252 Atk / 4 SpD / 252 Spe 
Jolly Nature 
- Fake Out 
- Nuzzle 
- Endeavor
- Volt Switch 
Pikachu is this team’s lead. With Fake Out it deals some chip. Nuzzle can cripple stuff like Zamazenta or Darkrai. Endeavor takes advantage of Pikachu’s high Speed to cripple anything that attacks it on the Nuzzle turn. Volt Switch provides momentum.

Special Attacker (Pikachu-Alola) (M) @ Light Ball 
Ability: Lightning Rod 
Tera Type: Electric 
EVs: 252 SpA / 4 SpD / 252 Spe 
Modest Nature 
IVs: 0 Atk 
- Thunderbolt 
- Surf 
- Nasty Plot 
- Agility
A deadly double dancer especially with Light Ball. Might as well be Miraidon. Thunderbolt is STAB and Surf is coverage for annoying Grounds like Iron Treads and Great Tusk. Nasty Plot + Agility is the double dance part.

Physical Attacker (Pikachu-Hoenn) @ Light Ball 
Ability: Lightning Rod 
Tera Type: Electric 
EVs: 252 Atk / 4 SpD / 252 Spe 
Adamant Nature 
- Wild Charge 
- Knock Off / Upper Hand
- Play Rough 
- Agility 
Crazy strong bro with Tera Electric Wild Charge and crazy coverage. Pretty much the Zacian-C of OU. Agility allows it to outspeed threats like Zamazenta and Darkrai. Knock Off punishes switches, such as if the opponent switches out of Primarina and to Great Tusk. Upper Hand is an option to blow up Sucker Punch Kingambit. Play Rough provides coverage against Raging Bolt and the Dark types of the tier. Lightning Rod means Raging Bolt can’t revenge kill.

Physical Wall (Pikachu-Kalos) @ Heavy-Duty Boots 
Ability: Static 
Tera Type: Ghost 
EVs: 252 HP / 252 Def / 4 SpA 
Bold Nature 
IVs: 0 Atk 
- Protect 
- Alluring Voice 
- Wish 
- Volt Switch 
Physical wall of the team. Tera Ghost makes Zamazenta and Dragonite cry. Static annoys stuff like Gouging Fire. Protect allows Pikachu to scout choice sets from Barraskewda and Dragapult so it can switch to an appropriate answer, while also allowing it to receive its own Wish. Alluring Voice punishes Iron Defense Zamazenta and Swords Dance Ogerpon-W. Wish provides healing support for the sweepers and Volt Switch allows for a safe pivot.

Special Wall (Pikachu-Unova) @ Heavy-Duty Boots 
Ability: Lightning Rod 
Tera Type: Fairy 
EVs: 252 SpD / 252 Spe 
Calm Nature 
IVs: 0 Atk 
- Protect 
- Alluring Voice 
- Wish 
- Volt Switch 
Cry Raging Bolt. Tera Fairy + Lighting Rod walls non-weather sets, while also dodging an attack from Darkrai. Role is very similar to Physical wall Pikachu except it’s invested in SpDef.

Disruptive Pivot (Pikachu-Sinnoh) @ Light Ball 
Ability: Static 
Tera Type: Poison 
EVs: 4 Atk / 252 SpA / 252 Spe 
Hasty Nature 
- Knock Off 
- Encore 
- Thunderbolt 
- Volt Switch
Comes in as a cool bro and deals the damage. Thunderbolt hits hard and Volt Switch is to pivot. Encore traps Calm Mind Primarina and Swords Dance Kingambit. Knock Off removes items. Gliscor isn’t a free switch with this. Tera Poison to remove Toxic Spikes.
Hope this team brings much Elo once the Species Clause is adjusted.