Regulation M-C explained: dates, roster changes and what it means for team codes

Regulation M-C is the third ruleset of Pokémon Champions. It runs from 9 September to 2 December 2026 and covers Ranked Battles seasons M-6, M-7 and M-8.

What changed from M-B

• 29 new Pokémon joined the roster, among them Raichu, Floette, Golisopod, Aerodactyl, Lucario and Garchomp with new Mega Evolutions.
• Every Mega Evolution from M-A and M-B stays legal.
• The 2027 Global Challenge I (25–28 September) and the Latin America International Championships (20–22 November) use this format.

Effects on Replica codes

• Codes shared under M-A or M-B still load if every Pokémon is legal in M-C, which is true for almost all of them.
• The meta moved, though: Mega Raichu Y, Mega Salamence and Mega Garchomp Z define M-C, so older teams are often outpaced.
• Filter this site by Regulation M-C to see only teams built for the current rules.

What comes next

• Regulation M-D is announced for 2 December 2026. Teams built for it will appear here as soon as players share them.
• When the regulation changes, codes containing newly banned Pokémon stop loading. We mark them broken after player reports.

Updated 2026-10-20