New Items in Pokémon Champions: Regulation M-B

Fifteen New Items Change the Damage Landscape

Regulation M-A was a tight item environment. Mega Stones, Choice Scarf, Choice Band, Choice Specs, berries, type-boosting plates, and Focus Sash covered nearly all competitive roles, but the absence of Life Orb, weather rocks, and several power-boosting items kept many team archetypes off the table. M-B changes that.

The fifteen new items span five categories: a universal damage booster (Life Orb), weather extenders (the four weather rocks), accuracy tools (Wide Lens and Zoom Lens), power boosters (Muscle Band, Wise Glasses, Expert Belt), and utility items (Light Clay, Metronome, Iron Ball, Shed Shell, Big Root). Every single one of them was competitively available in mainline Pokémon games, so the theory behind them is well understood — what is new is their interaction with the M-B species roster and the Champions doubles format.

This guide covers each item in detail: what it does, which Pokémon benefits most, how it interacts with the new M-B arrivals, and what to watch for when your opponent is running it.

Life Orb: The Single Biggest Shift

Life Orb boosts the damage of all moves by 30% and costs 10% of the holder's maximum HP each time it deals damage. That trade-off sounds straightforward, but in the context of M-B — where it was simply unavailable before — it changes the damage math for a large portion of the format simultaneously.

The most obvious consequence: EV spreads built for M-A may no longer guarantee survival against their intended threats if those attackers are now running Life Orb. A spread tuned to survive one Earthquake from an uninvested Garchomp needs to be recalculated if that Garchomp is now carrying Life Orb. The 30% multiplier stacks multiplicatively with STAB, type effectiveness, and any ability boosts — so Life Orb Flare Blitz from Mega Blaziken under clear skies is not simply “Mega Blaziken Flare Blitz” with a badge on it.

The Pokémon that gain the most from Life Orb in M-B are offensive powerhouses with wide, varied move pools — specifically those that can threaten many different targets from the same set without committing to a Choice lock. Gholdengo is the most natural fit: Good as Gold gives it free setup opportunities against status-move-heavy teams, and Life Orb Make It Rain hits for enormous Special damage while Nasty Plot can reset the post-Make-It-Rain Special Attack drop. Dragalge with Adaptability STAB gets Adaptability × Life Orb on its Poison and Dragon moves, which against unresisted targets produces genuinely frightening numbers. Mega Blaziken is the expected premier Life Orb user — Speed Boost means it will eventually outspeed nearly everything, and Life Orb removes the need for a Choice Band to push damage into OHKO range.

The self-damage on Life Orb is not insignificant. After three offensive turns, Mega Blaziken has lost 30% of its HP to recoil in addition to whatever the opponent has dealt. In a doubles format where finishing blows come quickly, Life Orb users are often best treated as fast, high-impact threats rather than sustained attackers. Do not assume your opponent's Life Orb user is healthy if they have fired three times.

Weather Rocks: Enabling New Archetypes

The four weather-extending rocks are some of the most structurally important items in all of competitive Pokémon, and their absence in Regulation M-A was a deliberate limitation that prevented weather-based team structures from being reliable. Weather in standard doubles lasts five turns by default; under a Drizzle, Drought, Sandstorm, or Snow-setting ability, the automatic weather ends after five turns unless extended by a weather rock. Five turns rarely covers a full match.

Damp Rock extends Drizzle rain to eight turns. This is the most impactful of the four rocks in early M-B because rain is now paired with a new and threatening Swift Swim user: Mega Swampert. The Pelipper + Mega Swampert core relies on Damp Rock: Pelipper sets Drizzle on entry, holds Damp Rock for the maximum duration, and Mega Swampert fires off boosted Waterfall hits with a doubled Speed stat. Eight turns of rain means that even after lead exchanges and pivots, there is sufficient weather remaining to execute the win condition.

A critical interaction to note: Mega Blaziken's ability is Speed Boost, not any weather-based ability. Mega Blaziken does not care about rain or sun. However, opposing rain teams must manage the fact that Flare Blitz is 50% weaker in rain, which reduces Mega Blaziken's damage output significantly. Rain teams can use this as a soft check to Mega Blaziken offensively, even if they cannot survive a Close Combat from it.

Heat Rock extends Drought sun to eight turns. Sun teams received no major new Swift Swim-equivalent attacker in M-B, but Chlorophyll users from M-A (including Vileplume, which is new to M-B) benefit immediately from the extended duration. Sun teams will remain a secondary archetype in early M-B but become more consistent simply because eight turns is meaningfully better than five in a best-of-three set.

Smooth Rock extends Sandstorm to eight turns. Sand is a relevant archetype in M-B because Hippowdown, Garchomp, and Excadrill were all already legal in M-A. Eight-turn sand means Sand Rush Excadrill has more turns to sweep in the back. Icy Rock extends Snow to eight turns, supporting Blizzard’s 100% accuracy in snow and providing the chip damage that Snow teams use as a passive win condition.

Accuracy Tools: Wide Lens and Zoom Lens

High-power, low-accuracy moves have always been a calculated risk in competitive doubles. The upside of Stone Edge at 100 base power is immediately offset by its 80% accuracy. Wide Lens and Zoom Lens offer different solutions to the same problem.

Wide Lens boosts accuracy by 10% multiplicatively for all moves. An 80% move becomes 88%. A 70% move (Fire Blast, Focus Blast, Blizzard outside of snow) becomes 77%. That remaining 23% miss rate on Focus Blast is still significant, but the item meaningfully reduces the variance. Wide Lens is best on Pokémon whose main role-defining moves have awkward accuracy thresholds: Mega Metagross with Zen Headbutt at 90% (becomes 99% with Wide Lens — effectively perfect), or Mega Swampert with its own accuracy-dependent coverage moves.

Zoom Lens boosts accuracy by 20% but only when the user moves after the target. That condition — moving last in a given turn — is a deliberate pairing with Trick Room. A slow Trick Room sweeper holding Zoom Lens moves last under normal field conditions (setting up the Zoom Lens bonus) then switches to moving first once Trick Room is active. It is a situational item, but in a dedicated Trick Room team it removes the accuracy variance from moves entirely: Stone Edge goes from 80% to 96%, and most coverage options reach or approach 100%.

Power Boosters: Muscle Band, Wise Glasses, Expert Belt

M-A had type-boosting items (Charcoal, Mystic Water, Silk Scarf, etc.) that boosted a single type by 20%, and Choice Band/Specs that boosted all Physical or Special moves by 50% at the cost of move locking. Muscle Band, Wise Glasses, and Expert Belt slot between those extremes.

Muscle Band boosts all Physical moves by 10%, unconditionally. No move lock, no type restriction, 10% on every Physical attack the holder fires. This is a modest boost, but on a Pokémon like Mega Metagross — which uses both Bullet Punch (Steel) and Zen Headbutt (Psychic) and Earthquake (Ground) from the same set — Muscle Band applies to all three simultaneously. It is also the correct item for physical attackers who want a damage boost without the Choice lock that prevents pivoting or using utility moves.

Wise Glasses is the Special equivalent: 10% to all Special moves. Gholdengo benefits most here if it is not running Life Orb — Wise Glasses on Make It Rain gives it a consistent power boost without the HP cost that Life Orb imposes. On a more defensive role or a team that needs Gholdengo to survive multiple turns rather than trade aggressively, Wise Glasses is the safer item.

Expert Belt boosts super-effective moves by 20%, with no other condition. It is stronger than Muscle Band or Wise Glasses (20% vs 10%) but only applies to the subset of moves that hit super-effectively. Expert Belt shines on Pokémon with wide type coverage that frequently hits super-effective: Mega Sceptile hitting Water, Ground, and Rock types with Leaf Storm, or mixed attackers with both Physical and Special options targeting different type weaknesses from the same set. Moonblast from Grimmsnarl backed by Expert Belt against a Dragon or Dark type hits with a 20% bonus on top of Fairy STAB — a significant KO pressure in specific matchups. Expert Belt has the advantage over Life Orb of zero self-damage, which matters on Pokémon that are expected to stay on the field for multiple turns.

Utility Items: Light Clay, Metronome, Iron Ball, Shed Shell, Big Root

The five utility items each address a specific situational need rather than raw damage output.

Light Clay

Light Clay extends the duration of Light Screen and Reflect from five turns to eight turns. Its primary beneficiary in M-B is Grimmsnarl. A Grimmsnarl holding Light Clay uses priority Reflect and Light Screen via Prankster to set up both screens before any opponent can move, then those screens last eight full turns — covering most of a standard match. This is the screen setter item for any team structure built around screens in M-B. On a Grimmsnarl with Light Clay, the Prankster Screen + partner combination becomes a formidable opening play.

Metronome

Metronome boosts the power of consecutively used moves by 20% per use, capping at 100% extra power after five consecutive uses of the same move. It rewards repetitive move use, which in doubles is unusual — most competitive play involves switching moves frequently to target different type matchups. However, Metronome is exceptionally well-paired with two specific M-B arrivals: Annihilape’s Rage Fist (which has its own internal scaling) and Houndstone’s Last Respects (which scales with team attrition). A Houndstone using Last Respects every turn with Metronome stacking amplifies an already-escalating damage output.

Iron Ball

Iron Ball halves the holder’s Speed and removes the Flying type’s Ground immunity. Its primary use case is trapping Flying types under Earthquake: with Iron Ball on an opponent, your Earthquake (which normally misses Flying types entirely) hits them. The secondary use is on Trick Room teams that need their sweeper to have as low a Speed as possible — Iron Ball on a Musharna or Reuniclus ensures they move last even against other intentionally slow Pokémon. Held by the opponent, Iron Ball effectively reveals their team strategy (Trick Room or Earthquake trap) the moment it is identified.

Shed Shell

Shed Shell guarantees the holder can always switch out, bypassing all trapping moves and abilities (Block, Mean Look, Shadow Tag, Arena Trap). It is a niche item but a hard counter to any trapping strategy. In a format where Gothitelle or other trappers are rare, Shed Shell sees limited use — but against the occasional opponent who built their win condition around trapping, it is a free answer.

Big Root

Big Root boosts HP recovery from draining moves by 30%. The effect is fully multiplicative with the base drain percentage: Drain Punch normally restores 50% of damage dealt; with Big Root it restores 65%. Leech Life at 80 base power with Big Root becomes a meaningful sustain tool. The Pokémon that benefits most from Big Root in M-B is Mega Scrafty: Drain Punch is its recovery move, and Big Root extending that recovery makes it more durable across a full set.

What to Run on Which Pokémon

The question of item selection in M-B comes down to trade-offs between damage ceiling, sustainability, and utility. Here is a quick reference for the most common pairings:

• Mega Blaziken: Life Orb is the premier choice. Speed Boost means Mega Blaziken will eventually outspeed the field regardless, and Life Orb removes the need for Choice Band to guarantee KOs on the first hit.
• Gholdengo: Life Orb for maximum damage output; Wise Glasses if survivability matters more. Avoid Choice Specs — Make It Rain lowers Special Attack, wasting the Choice lock on a stat that has been reduced.
• Grimmsnarl: Light Clay for screen teams. Mental Herb if you need to guarantee Prankster screens against a Taunt. Expert Belt if using it offensively.
• Mega Swampert: Held by the weather setter (Pelipper), Damp Rock. Mega Swampert itself typically runs Life Orb or Muscle Band to push its Swift Swim-boosted Physical damage higher.
• Mega Metagross: Muscle Band for unconditional physical damage boost. Wide Lens for Zen Headbutt’s 90% accuracy reaching near-perfect.
• Annihilape: Metronome if using Rage Fist repeatedly, otherwise Assault Vest or Sitrus Berry for survivability while accumulating hits.
• Mega Staraptor: Life Orb on its Reckless recoil moves for maximum early-game damage. The combination of Reckless, Life Orb, and Brave Bird is a one-turn nuke.
• Houndstone: Metronome if the team protects it for attrition. Otherwise Sitrus Berry for extended survival while Last Respects accumulates power.

Revisiting Your M-A Spreads

If you have carried an M-A team into M-B without adjusting EVs, your defensive benchmarks may have shifted. The introduction of Life Orb is the primary reason: any Pokémon you tuned to survive a specific hit from a common attacker needs to have that calculation re-run with Life Orb factored in.

A practical starting point: take your team’s five most critical defensive benchmarks — the specific hits you built your HP and Defense or Special Defense EVs to survive — and multiply the damage output of the attacker by 1.3 to simulate Life Orb. If your spread still survives, it carries over to M-B. If it does not, you need to invest more bulk or change your coverage assumptions for that matchup.

The shifts that matter most in early M-B are:

• Life Orb Flare Blitz from Mega Blaziken against Pokémon that were previously safe from it
• Life Orb Make It Rain from Gholdengo against specially defensive Pokémon
• Life Orb Waterfall from Swift Swim Mega Swampert under rain against Pokémon that were safe from unboosted Waterfall

Use the team builder’s damage calculator to run these checks before you bring your team to a ladder session. The item pool expansion in M-B is specifically designed to create new damage thresholds — and the players who recalculate their spreads for the new environment will have an immediate edge over those who carry over their M-A benchmarks untouched.