Reg M-C Tier List and Predictions: what changes in Pokémon Champions Regulation Set M-C

Regulation Set M-C went live in Pokémon Champions on September 8 and runs until December 1. It adds 23 new Pokémon and six new Mega Evolutions, and it does not remove anything: every Pokémon that was legal in Reg M-B is still legal. That makes M-C an expansion rather than a reset, so the M-B board is the honest starting point for the M-C tier list. Here is what is confirmed, what the new Megas look like on paper, and what is still unannounced.

New Pokémon tier list

Three are in S, five in A, nine in B, eight in C and four in D. The reasoning for the top seven is below, and the full tier list with these added comes after it.

Pokémon	Predicted	Why
Rillaboom	S	The only full-time Grassy Terrain, and it also has Fake Out at 85 Speed, faster than Incineroar and Grimmsnarl. Halves Earthquake, heals the grounded side, and turns Grassy Glide into priority off 125 Attack.
Salamence-Mega	S	Aerilate on 145 Attack and 130 Defence, with Intimidate on the pre-Mega turn. Top tier in every format it has been legal in.
Lucario-Mega-Z	S	164 Special Attack at 151 Speed, and Aura Guard halves contact damage, so hitting it with a physical attacker no longer works.
Garchomp-Mega-Z	A	141 Special Attack at 151 Speed with Levitate. Immune to Ground and not grounded, so terrain never touches it.
Indeedee	A	Psychic Surge blocks priority against grounded targets, which switches off Fake Out. Three of the current S tier lead with Fake Out.
Baxcalibur-Mega	A	175 Attack is the highest in the release, but 87 Speed means it wants Trick Room or Tailwind.
Absol-Mega-Z	A	Sharpness on 154 Attack at 151 Speed, held back by 65/60/60 bulk. It hits first or it dies.

Reg M-C Week 1 predicted tier list

If these placements hold, the top of the format gets faster and depends less on Fake Out. Kingambit, Basculegion and the rest of the current S tier do not go anywhere, but they now share the tier with a terrain setter, a 151 Speed special attacker that resists physical hits, and the best Mega in the release.

What is confirmed

The full roster is out. Reg M-C adds 23 new Pokémon and six new Mega forms, 29 newly useable entries in total. None of the 23 were legal in Reg M-B, so all of them are genuinely new to the format.

New Pokémon	Type
Rillaboom	Grass
Indeedee	PsychicNormal
Pincurchin	Electric
Arboliva	GrassNormal
Salamence	DragonFlying
Baxcalibur	DragonIce
Golisopod	BugWater
Cinderace	Fire
Inteleon	Water
Toxtricity	ElectricPoison
Sirfetch’d	Fighting
Grapploct	Fighting
Perrserker	Steel
Mabosstiff	Dark
Thievul	Dark
Persian-Alola	Dark
Persian	Normal
Wigglytuff	NormalFairy
Mr. Mime	PsychicFairy
Farfetch’d	NormalFlying
Squawkabilly	NormalFlying
Gogoat	Grass
Swalot	Poison

One small discrepancy worth noting: the official announcement said 24 Pokémon would be newly available, and the tracked roster lists 23. It may be a form counted separately or an official miscount. It does not change what you can build with.

Terrain becomes a real option

This is the biggest change in the set, and it is easy to miss because it is spread across the Pokémon list and the item list. M-C adds three terrain setters at once: Rillaboom with Grassy Surge, Indeedee with Psychic Surge, and Pincurchin with Electric Surge. Arboliva comes with Seed Sower, which sets Grassy Terrain when it is hit.

At the same time, five of the twelve new items are terrain support: Terrain Extender, plus the Electric, Psychic, Misty and Grassy Seeds. Adding the setters and the items in the same release is not a coincidence.

To be accurate about what changed: terrain was not completely absent from Reg M-B. Raichu-Mega-X has Electric Surge. It was just never worth it. Mega X appears in 104 tournament entries and does not rank on the board, while Mega Y, the Lightning Rod form, appears in 1,079 and sits sixth in S. So terrain existed as a fringe option and now has three dedicated setters and a full item suite behind it.

New terrain piece	What it does
Rillaboom	Grassy Surge, plus Fake Out at 85 Speed. Halves Earthquake, heals grounded Pokémon, and powers Grassy Glide priority
Indeedee	Psychic Surge. Blocks priority moves against grounded targets, which shuts off Fake Out
Pincurchin	Electric Surge. Stops sleep on grounded Pokémon and boosts Electric moves
Arboliva	Seed Sower. Sets Grassy Terrain when hit, so terrain comes back without a lead slot
Terrain Extender	Takes terrain from five turns to eight
Electric / Psychic / Misty / Grassy Seed	A free stat boost on the turn its terrain is up

Indeedee is the one to think hardest about. Psychic Terrain blocks priority moves against grounded Pokémon, and the current S tier leans on Fake Out from Raichu-Mega-Y, Sneasler and Incineroar. A support format built on buying a turn has to answer a Pokémon that turns that off.

All three Z Megas have 151 Speed

This is the clearest thing in the new data. The fastest Pokémon anywhere in the current S and A tiers is Mega Aerodactyl at 150 base Speed. All three Z Megas arrive at 151. One point faster than the entire established format, which is too precise to be a coincidence.

Mega	Type	Ability	Atk	SpA	Speed
Absol-Mega-Z	DarkGhost	Sharpness	154	75	151
Garchomp-Mega-Z	Dragon	Levitate	130	141	151
Lucario-Mega-Z	FightingSteel	Aura Guard	100	164	151
Salamence-Mega	DragonFlying	Aerilate	145	120	120
Golisopod-Mega	BugSteel	Tough Claws	150	70	40
Baxcalibur-Mega	DragonIce	Thermal Exchange	175	105	87

All three arrive with a different ability from the one their standard Mega uses, and one of them is new to Champions entirely.

• Mega Lucario Z gets Aura Guard, a brand new ability that halves the damage it takes from contact moves. Lucario has always hit harder than it could survive, and this is the fix. Paired with 164 Special Attack, it is a special attacker that shrugs off physical hits.
• Mega Garchomp Z gets Levitate, so it loses the Ground typing and gains full Ground immunity. It also stops being grounded, which means terrain does not touch it. In a set that just added three terrain setters, that is worth noting.
• Mega Absol Z gets Sharpness, which boosts slicing moves like Night Slash and Shadow Claw. With 154 Attack and the new Ghost typing, it is a straightforward physical threat rather than a support piece.

The Reg M-B tier list it starts from

Because nothing was removed, the M-B tier list carries into M-C unchanged at launch. This is the S tier as of the last data-driven board, built from 32 tournaments including the World Championships. Treat it as where M-C begins, then expect the new Megas to push into it.

Pokémon	Tier	Note
Kingambit	S	Number one all season, and on 15 of 16 Worlds top-cut teams
Sylveon	S	Spread Fairy damage, pairs with the support shells
Basculegion	S	The most common single piece in the format
Sneasler	S	Unburden plus Fake Out pressure
Charizard-Mega-Y	S	Sun setter and standalone threat
Incineroar	S	Intimidate and Parting Shot support
Raichu-Mega-Y	S	Lightning Rod support, best win rate in S
Staraptor-Mega	S	Speed control and pressure

Predictions

• Mega Lucario Z is the one to beat. 164 Special Attack at 151 Speed, and Aura Guard halves contact damage, so the usual answer of hitting it hard with a physical attacker is much worse than it used to be. Steel coverage also hits the Fairy support core sitting in S.
• Rillaboom does two jobs at once. Grassy Surge changes terrain for everyone, weakens Earthquake, and gives it priority through Grassy Glide. It also carries Fake Out at 85 Speed, which beats Incineroar and Grimmsnarl at 60, the two Fake Out users the format actually leans on. Getting terrain and the Fake Out slot from the same Pokémon is why it is worth an S.
• Mega Absol Z is a fast physical breaker. Sharpness at 151 Speed with 154 Attack outspeeds the whole format, and the Ghost typing gives it a clean answer to the Psychic Terrain teams that Indeedee enables.
• Mega Salamence is the safest pick. Aerilate with 145 Attack and 130 Defence has been top tier in every format it has appeared in, and Intimidate on the base form already fits the meta.
• Mega Baxcalibur hits hardest but is slow. 175 Attack is the highest in the release, though 87 Speed puts it under most of the format, so it likely wants Trick Room or Tailwind support.
• Mega Golisopod is better than it looks. Tough Claws boosts its contact moves by 30 percent off 150 Attack, and the Mega drops Emergency Exit, so it no longer gets dragged out at half HP. First Impression becomes boosted priority on a Pokemon with 175 Defence. Only 40 Speed holds it back.

The broader prediction is that M-C pushes the format faster and more special. Reg M-B settled into physical attackers with Intimidate support, and the answer to Intimidate was Kingambit's Defiant. Three new Megas above the speed ceiling, two of them special, changes what a safe lead looks like.

What is still unknown

• Whether more Pokémon are still to come. The official 24 count and the ten tracked entries do not line up yet.
• Mega Heatran was teased for Champions but is explicitly not in this release. It is expected in a later update.
• No bans or rule changes were announced, but early formats often get adjusted once results come in.

We will update this page as the remaining Pokémon are announced, and publish the first results-driven Reg M-C tier list in the weekly meta report once qualifying events have been played.