What is Regulation M-B? Everything You Need to Know

Regulation M-B Is Live

Regulation M-B launched on June 18, 2026, bringing Pokemon Champions into its second season. It follows directly from Regulation M-A (April 8 – June 17, 2026) and expands the format in three meaningful ways: a larger species roster, new Mega Evolution options, and a wider item pool.

If you are new to Champions, here is the quick context: Pokemon Champions is a fan-made competitive game built around Mega Evolutions. Regulation M-B is the second season — it adds Pokemon and options on top of the M-A foundation rather than replacing it. Every Pokemon that was legal in M-A remains legal in M-B.

The competitive ladder has reset with the new regulation. Every player starts from the same base, regardless of their M-A ranking. That makes M-B an ideal entry point for new players: the community is discovering the format simultaneously, and guides, team reports, and tier lists are being published in real time as the meta takes shape.

What Stays the Same in Regulation M-B

A number of foundational rules in Pokemon Champions do not change between regulations:

• Mega Evolutions remain fully legal — The defining feature of the Champions format continues into M-B and all future regulations.
• Doubles format, Level 50 — All matches are played 2v2 at Level 50. The core doubles ruleset is unchanged.
• Best of three in tournament play — Ranked matches remain best of three with team preview.
• All M-A species remain legal — The entire M-A roster of 262 species carries forward. None of the Pokemon that were legal before are removed.
• All M-A items remain available — Mega Stones, Choice items, berries, and all items from M-A are still permitted.

The meta knowledge you built during Regulation M-A is not wasted. Team archetypes, speed tier benchmarks, and common partner synergies all transfer. Many of the dominant Pokemon in M-A — Basculegion, Kingambit, Incineroar, Garchomp — remain powerful in M-B because the expanded pool adds to the available options rather than replacing the existing ones.

What Is New in Regulation M-B

22 New Base-Form Species

Regulation M-B adds 22 previously unavailable base-form Pokemon to the legal pool. These are confirmed legal as of June 18, 2026:

Generation III: Vileplume, Sceptile, Blaziken, Swampert, Mawile, Metagross

Generation IV: Staraptor

Generation V: Musharna, Scolipede, Scrafty, Eelektross

Generation VI: Pyroar, Malamar, Barbaracle, Dragalge

Generation VIII: Grimmsnarl, Falinks

Generation IX: Overqwil, Houndstone, Annihilape, Gholdengo, Qwilfish

New Mega Evolution Forms

Eleven new Mega Evolution forms enter the format alongside their base species. These include standard Generation VI Mega forms — Mega Sceptile, Mega Blaziken, Mega Swampert, Mega Mawile, and Mega Metagross — plus Champions-original Mega forms for Staraptor, Scolipede, Scrafty, Eelektross, Pyroar, Malamar, Barbaracle, Dragalge, and Falinks.

Raichu, which was already legal in M-A, gains two new Mega Evolution forms in M-B: Mega Raichu-X and Mega Raichu-Y, both exclusive to the Champions format.

15 New Held Items

The M-B item pool expands with fifteen held items that were unavailable in M-A:

• Life Orb — 1.3x damage boost at the cost of 10% HP per hit. The single most impactful new item.
• Weather rocks — Damp Rock, Heat Rock, Smooth Rock, and Icy Rock extend weather from 5 to 8 turns. Critical for weather-based team archetypes.
• Accuracy tools — Wide Lens (1.1x accuracy) and Zoom Lens (1.2x when moving last).
• Attack boosters — Muscle Band (1.1x physical), Wise Glasses (1.1x special), Expert Belt (1.2x on super-effective hits).
• Other utility — Light Clay (extends screens to 8 turns), Metronome (consecutive-move damage stacking), Iron Ball (grounds Flying types), Shed Shell (guarantees switching), Big Root (boosts HP drain).

How M-B Changes the Meta

New Pokemon entering a format always create ripple effects. Here are the most significant shifts to understand heading into M-B.

Weather Teams Become Viable

Damp Rock, Heat Rock, Smooth Rock, and Icy Rock were unavailable in M-A, which limited weather teams significantly — five-turn weather rarely outlasts a full match. With 8-turn weather now accessible, and Swampert’s Mega Evolution enabling Swift Swim rain at base 110 Attack, rain teams become a genuine archetype for the first time in Champions. Pelipper plus Swampert-Mega is the core to watch.

Speed Boost Archetypes Arrive

Blaziken’s hidden ability Speed Boost, combined with Blaziken-Mega’s base 100 Speed (which increases further with Speed Boost stacking), creates a self-accelerating attacker that was impossible to build around in M-A. Expect Blaziken-Mega to be a defining presence in early M-B.

Life Orb Raises the Damage Ceiling

Life Orb changes the maths of survival benchmarks across the entire format. EV spreads that survived key damage calculations in M-A may no longer be sufficient when the attacker is running Life Orb. Revisit bulk investments on your defensive Pokemon before assuming your M-A spreads carry over.

Prankster Support Gets a New Face

Grimmsnarl brings Prankster to the Dark/Fairy type slot, offering priority Thunder Wave, Light Screen, Reflect, and Spirit Break as a support option. It competes with Whimsicott for the dedicated Prankster support role but brings a very different defensive typing and tool set.

New Walls and Phys-Def Checks

Metagross-Mega arrives as a Steel/Psychic physical tank with Clear Body immunity to stat drops. Mawile-Mega brings Huge Power-backed Attack in a Steel/Fairy package that threatens many of the top M-A threats. Scrafty-Mega provides a Dark/Fighting wall with Moxie or Intimidate. These additions give team builders new options for checking the dominant threats from M-A.

Getting Started in Regulation M-B

Start From Your M-A Core

The strongest starting position for M-B is a stable M-A core that adapts to the new additions. Incineroar, Whimsicott, Kingambit, and Garchomp remain effective in M-B. Keep these as your foundation and adjust your fifth and sixth slot based on what the new additions can offer your team.

Decide on a Weather Identity Early

The introduction of weather rocks makes the weather vs. non-weather decision one of the most impactful team-building choices in M-B. If you run weather, commit to a Damp Rock/Heat Rock/Smooth Rock setter and build around it. If you run anti-weather, identify how your team handles Swift Swim Swampert-Mega specifically.

Check the Updated Speed Tiers

New species mean new speed benchmarks. Blaziken-Mega (base 100 + Speed Boost), Scolipede (base 112), and Staraptor (base 100) all create new targets to hit or fall below. The speed tier table has been updated to reflect the full M-B legal pool.

Use the Team Builder

The team builder is fully updated for Regulation M-B: all 284 legal species and 148 available items are reflected. Use the autofill and spread suggestion tools to tune your team for the new meta before you ladder.

The Broader Vision: Where Champions Is Going

Regulation M-B is the second step of an ongoing series. The Champions format is designed to grow with each new regulation — adding Pokemon, Mega forms, and items in staged rollouts that keep the meta digestible while expanding the competitive depth over time.

Future regulations (M-C and beyond) will continue expanding the pool. The format’s staged approach — introducing new Pokemon and mechanics across multiple seasons rather than all at once — ensures each regulation has its own identity and that no single Pokemon or Mega form dominates unchallenged indefinitely.

M-B is a strong entry point into Champions. The community is actively discovering the new meta, which means guides, team reports, and tier discussions are being published in real time. Watching the usage statistics as M-B matures is the fastest way to understand what is actually dominant — and what counters to prepare for.