I don't pay much attention to the community scene for Pokemon but this seems pretty big considering Dynamax was THE gameplay mechanic for SwSh.
Explanation here.
Man, it makes Mega Evolutions look like nothing in comparison.
While this isn't from OFFICIAL tournaments, Smogen has been running tournaments since before Pokemon had online play or ran anything close to official tournaments.
Explanation here.
Dynamaxing provides Pokémon with an increase to their maximum HP... up to 100%. Dynamaxed Pokémon are immune to flinching. They are immune to moves affected by weight. They cannot be switched out by moves such as Dragon Tail or Whirlwind, but they can switch out through Emergency Exit. Dynamaxed Pokémon cannot have their Ability modified by moves such as Entrainment and Skill Swap
Man, it makes Mega Evolutions look like nothing in comparison.
While this isn't from OFFICIAL tournaments, Smogen has been running tournaments since before Pokemon had online play or ran anything close to official tournaments.