Reg M-B Week 4 Meta Report: Season M-4 opens on a settled top eight
By ChampTeams Editorial
Season M-4 is underway, and the first data cut looks a lot like where Season M-3 finished. Across the full Reg M-B window we now have 108 qualifying Limitless tournaments and 4,696 validated player entries, with 18 new events since the Season M-3 wrap-up. The headline is stability: the S tier held its exact eight, one goodstuffs shell is winning most of the trophies, and the weather cores we flagged a week ago all held. Here is the current Reg M-B tier list, the cores, and the teams actually winning events.
Meta score is a results-led composite from every 30+ player Champions Reg M-B tournament on Limitless. It blends tournament usage, win rate (shrunk toward the mean so small samples are not over-rewarded), top-cut conversion, and event wins, each weighted by how large the event was. Tiers come from the natural gaps in score.
The Season M-4 tier list
| Pokémon | Tier | Win rate | Meta score |
|---|---|---|---|
 Charizard-Mega-Y | S | 54.9% | 168.4 |
 Kingambit | S | 54.1% | 168.2 |
 Basculegion | S | 54.0% | 168.0 |
 Garchomp | S | 51.9% | 166.9 |
 Incineroar | S | 51.4% | 162.5 |
 Archaludon | S | 54.5% | 160.1 |
 Sylveon | S | 53.0% | 159.9 |
 Pelipper | S | 54.0% | 159.2 |
The top eight held
No Pokémon entered or left S this cut. The same eight that closed Season M-3 opened Season M-4, and the only movement inside the tier was Kingambit ticking up to second overall on a 54.1% win rate, just behind Charizard-Mega-Y, which stays the format’s single highest-rated Pokémon at 168.4. Basculegion, Garchomp, Incineroar, Archaludon, Sylveon and Pelipper all held their spots. When the top of a format does not move across 18 fresh events, that is the meta telling you it has settled rather than paused.
The Week 3 forecast, checked
The Season M-3 wrap-up made two calls for early Season M-4. Both held up. We said to watch whether Mega Metagross would finally clear the S cutoff, and whether the rain resurgence would survive opponents adjusting. Metagross-Mega did not break through, and rain did more than survive.
Metagross-Mega sits at 145.5 with a 53.3% win rate, top of A and unmistakably strong, but the same distance from the S cutoff it was a week ago. Tough Claws priority keeps it in every conversation without pushing it over the line. If it clears S, it will be on a usage spike, not a win-rate one.
Two of the biggest events this window went to rain. DaniVGC03 took Maddo’s Cup at 13-1 with a Swampert-Mega rain build (Pelipper, Archaludon, Sinistcha), and Force_India ran the table at Pep_uni #1 (12-0) on a Venusaur-Mega plus rain core. Swampert-Mega (54.3%) and the Gengar-Mega plus Politoed perish line both held as A-tier rain engines.
What is actually winning tournaments
One archetype is doing most of the winning: a two-Mega goodstuffs shell built around Charizard-Mega-Y, Garchomp, Kingambit and Sylveon, with Farigiraf for speed control and Aerodactyl-Mega as the second stone. JoeUX9 won the 4th Annual St. Jude VGC Charity event at 14-2 with a Venusaur variant of it, Louie John Valencia took Khun Champions Cup #2 at 13-1 with the Aerodactyl version, and ToniTheBest went 11-0 at Champions Collective #14 on the same skeleton. It is the best pieces in the format, glued together, with two stones so you pick the better Mega per matchup.
S · #1 · 54.9% WRCharizard-Mega-Y
DroughtStill the top-rated Pokémon in the format and the anchor of the winning goodstuffs shell. Its Flying typing dodges the Ground moves that punish other sun leads, and it hits hard enough to matter even when the sun is not the plan. Almost every trophy team this window ran it, usually beside Garchomp.
A · 54.9% WRVenusaur-Mega
Thick FatThe quiet riser. It sat near the top of A on the season’s best raw win rate outside S, and it showed up on two different trophy teams this window, both a rain build and a sun build. Thick Fat and Chlorophyll let it flex between weather plans, which is exactly the flexible-speed-control profile the meta is rewarding right now.
Cores that showed up
- Charizard-Mega-Y + Garchomp + Kingambit + Sylveon: the goodstuffs core behind most of the week’s trophies, usually with Farigiraf and a second Mega.
- Blastoise-Mega + Delphox-Mega: the redirection-offense pair, the highest real co-occurrence core in the data.
- Gengar-Mega + Politoed: the perish-trap rain line, holding as A alongside the older Pelipper plus Archaludon rain.
- Froslass-Mega + Lycanroc-Dusk (+ Scovillain-Mega): the snow / Aurora Veil offense shell.
- Excadrill + Mega Tyranitar: the sand core, still present in the top teams behind Hydreigon and Mega Staraptor.
The best teams
The trophy list splits cleanly between the goodstuffs shell and the weather builds. These are the standout event winners from the window, not aggregate play-rate leaders, so read them as what beat everyone rather than what everyone brought.
| Player | Result | Team |
|---|---|---|
| JoeUX9 (St. Jude Charity) | 14-2 | Charizard-Mega-Y Farigiraf VenusaurGarchompIncineroarSylveon |
| Louie John Valencia (Khun Cup #2) | 13-1 | Charizard-Mega-Y Aerodactyl-MegaFarigirafGarchompSylveonKingambit |
| DaniVGC03 (Maddo’s Cup #9) | 13-1 |  Swampert-MegaPelipperArchaludon Sinistcha Maushold Gholdengo |
| Force_India (Pep_uni #1) | 12-0 | Venusaur-Mega GrimmsnarlPelipperArchaludonSwampert-Mega Hydreigon |
| Snorlaxpikachu1 (Alpensee x Smogon #65) | 12-1 |  Blaziken-MegaVenusaur-Mega Ninetales-Alola Lycanroc-DuskKingambitBasculegion |
Where Season M-4 points next
This is a settled top with an unsettled middle. The goodstuffs shell has no hard counter yet, so the pressure moves to A: whether Mega Metagross finds the usage to break S, whether the Venusaur-Mega weather flex keeps converting, and whether one weather (rain looks the strongest right now) pulls clear of the other two. If you are building this week, the safe pick is the two-Mega goodstuffs core; the sharp pick is a rain build that beats it.
The current board sits at 8 S, 33 A, 20 B, 39 C and 64 D across 164 ranked Pokémon. The growth at the bottom is low-usage Pokémon crossing the appearance threshold, not churn at the top. The live tier list keeps updating as new Season M-4 results land.