Pokémon Champions Rain Team Guide — Pelipper, Archaludon, Basculegion

Rain is the defining archetype of Pokémon Champions Season M-1, and it will carry through Regulation M-A until June 17. The format's top cut is Fire-heavy — Incineroar, Mega Charizard Y, Volcarona, Kingambit — which leaves a persistent Water-damage opening, and Pelipper's Drizzle is the cheapest, most reliable way to turn that opening into a full team identity. This guide covers how to build and pilot a Pokémon Champions rain team, starting with the Pelipper + Archaludon + Basculegion core, the Mega and support slots that hold the structure together, and the pre-game reads you need to survive the mirror.

Why rain dominates Regulation M-A

Five mechanics stack to make rain the strongest weather in the current Pokémon Champions format, and none of them are soft reads.

• Water ×1.5, Fire ×0.5 under rain. Champions' top cut skews Fire-heavy — Incineroar, Mega Charizard Y, and Volcarona are all prevalent — so Drizzle doubles as a Fire check and a Water enabler at the same time.
• Electro Shot fires turn one. Archaludon's signature move normally charges for a turn, then fires; under rain it charges and fires on the same turn. The interaction is not subtle and it is the single biggest reason rain wins decision points the mirror cannot match.
• Thunder hits 100% and Weather Ball becomes 150 BP Water-type. If a support piece wants soft coverage, those are the two default clicks and both scale with rain.
• Solar Beam becomes a two-turn move again. Sun cores collapse the moment their Charizard lead drops, and rain takes that lead with a 2× Electric Electro Shot.
• One Mega per team, always. Regulation M-A's one-Mega-per-battle rule pushes every archetype toward efficiency, and rain gets more out of its Mega slot than most — Mega Blastoise's Mega Launcher scales both water STABs at once.

The core: Pelipper + Archaludon + Basculegion

Pelipper — the Drizzle setter

Pelipper is a 60/100/70 bulk piece with a 95 SpA ceiling, and the only reason it sits on this team is the Hidden Ability: Drizzle sets rain automatically on switch-in. The dominant moveset the current Pokémon Champions ladder returns is Hurricane / Tailwind / Weather Ball / Protect (31.5% / 28.7% / 24.9% / 13.9% per recent usage aggregates). Hurricane is the 110 BP spread STAB that doubles as a Grass-type answer in rain; Tailwind is the speed layer that keeps Archaludon and Basculegion moving first once they are on the field; Weather Ball is a 150 BP Water-type follow-up when Drizzle is live; Protect covers the turn-one Fake Out window.

Pelipper's job is not to dish damage. It is to survive the lead turn, set the weather, click Tailwind if the matchup needs it, and pivot out. See the Pelipper Pokédex page for full move coverage and matchup notes.

Archaludon — the Electro Shot abuser

Archaludon is the reason rain breaks through walls no other archetype can touch. Steel / Dragon typing gives it double resistance in the Dragon mirror and a clean answer to Fairy spam, its 130 base Defence soaks a physical hit while Stamina stacks, and its 125 SpA clicks Electro Shot through most of the roster. The rain interaction matters here more than anywhere else on the team: the move normally charges on turn one and fires on turn two, which means a naked Archaludon loses tempo against priority. Under Pelipper's rain, Electro Shot charges and fires on the same turn — the move becomes a 130 BP Electric nuke with no downside.

Archaludon is also the piece readers most often try to counter, so the Archaludon counter guide is the mirror you want to keep open in another tab while you tune spreads.

Basculegion — the Wave Crash cleaner

Basculegion closes the games Archaludon and Pelipper shape. 120 base HP soaks recoil from Wave Crash indefinitely, 112 base Attack drives the threat, and Adaptability turns same-type STAB into a 2× multiplier instead of the usual 1.5× — stack that with rain's ×1.5 Water boost and Wave Crash reads like a 2.25× STAB hit before a single EV goes in. Last Respects on the back end scales with teammate KOs and closes whatever is left after Archaludon's Electro Shot has finished its round. Mold Breaker is the alternate ability if you prefer to ignore Swift Swim / Unaware interactions, but Adaptability is the default on the current Pokémon Champions meta page.

For the mirror case — teams that click Basculegion against your rain instead of alongside it — the existing Basculegion counter guide covers the pressure plan.

Flex slots — Mega, Fake Out, redirection

The three-Pokémon core leaves three open slots, and a competitive rain team resolves them with a Mega, turn-one disruption, and speed control.

Mega slot: Mega Blastoise. Blastoisinite is a 2,000 VP Frontier Shop purchase (see the Mega Stones guide if you have not unlocked it yet), and Mega Launcher scales Water Pulse, Aura Sphere, and Dark Pulse by 1.5×. Mega Blastoise's 135 SpA behind rain-boosted Water Pulse is the cleanest secondary water attacker in the 186-Pokémon roster. Mega Swampert is not on the Champions roster, so do not design around a Swift Swim Swampert shell the way older rain guides suggest — the piece does not exist in this format.

Fake Out + Intimidate: Incineroar. Incineroar's Fake Out is the turn-one control piece every rain team wants, and Intimidate on entry softens the physical return that would otherwise trade with Basculegion. Rain halves Incineroar's Fire STAB, which is a cost, but the trade is worth it because nothing else on the roster compresses Fake Out, Intimidate, and U-turn into one slot. Cross-reference the Incineroar counter guide for the mirror.

Speed control + redirection: Whimsicott. Prankster Tailwind backs up Pelipper's Tailwind if your lead is pressured, and Rage Powder pulls single-target attacks off Archaludon while it charges — useful even when the charge turn is waived, because it protects against Dragon-move reads from opposing specialists. Note that Dark-type opponents ignore Prankster, which means Incineroar and Kingambit on the other side of the field erase half of Whimsicott's kit.

Coverage note: Tera Grass walls both rain-boosted Water STABs at the same time. If your opponent previews a Grass-typed Tera option, do not play a turn where Wave Crash and Weather Ball are both clicked into the same slot.

Playing the rain mirror and beating opposing rain

In the rain mirror, whoever sets Tailwind first wins the Pelipper exchange. Base 65 Speed on Pelipper is a coin flip, so the lead spread usually runs max Speed with a Timid nature under the 66-EV cap — 32 Speed EVs plus Timid is a real speed-tier upgrade, not a rounding error. If both sides Tailwind, the match becomes a Protect dance until one Archaludon clicks Electro Shot into the other Pelipper. That calc is a 4× hit with rain already up, and the game usually ends there.

Beating rain from the outside hinges on four plans: Trick Room (Ursaluna or Sinistcha inverts the speed math Tailwind gives rain), priority under Tailwind (Incineroar's Fake Out buys a turn even when you are slower), Tera Grass on a Water-weak pivot, or stealing the weather entirely — Sandstream Tyranitar and Mega Charizard Y's Drought both overwrite Drizzle on switch-in.

Pitfalls

• Letting Pelipper go down turn one without Tailwind up. Rain lingers for five turns after Drizzle fires, so the weather itself survives a missed Protect — but the speed layer does not. If you commit Pelipper to chip trades before Tailwind is on the field, you are paying for Drizzle and getting none of the structural upside.
• Committing Electro Shot on preview. Ground-type immunity, Volt Absorb partners, and Lightning Rod redirects all erase the move cleanly, and the Champions roster has plenty of each — Garchomp is the obvious Ground-type read, Rotom-Wash is the obvious Electric-absorb threat. If the opposing preview shows any of them, switch Archaludon to Dragon Pulse or Draco Meteor for the turn and save Electro Shot for a confirmed neutral target.
• Leaning on Weather Ball when Grass Tera is telegraphed. Tera Grass Incineroar walls Water STAB and a Grass-type Weather Ball both at once. Read the Tera board early; if the answer to your rain is a Tera Grass pivot, Flash Cannon from Archaludon or Hurricane from Pelipper is the cleaner click.

Build it in the Team Builder

Rain is not a theoretical archetype in the current Pokémon Champions meta — it is the dominant one, and every piece of this guide is already live in the verified teams index. Open the Team Builder with Pelipper as the first slot, cross-reference the live meta page for current usage on every supporting piece, and check the counter-guides hub if the team you are preparing against is on the opposite side of the rain matchup.