Dynamax is a new feature being introduce to the Pokemon Franchise. This phenomenon allows trainers to increase the size and strength of their Pokemon in battles that allow it for three turns. While Dynamaxed, Pokemon will be much stronger than usual. Dynamax Pokemon will also what are known as Max Moves that are specific to each Pokemon Attack Type and will vary in strength depending on the regular Pokemon Attack it is being used for (much like that of Z-Crystals). Each Max Move will also have secondary effects, like raising/lowering stats.
Trainers can even use Dynamax Candy on their to increase a Pokemon's Dynamax Level, which will see that Pokemon have all the more Hit Points when Dynamaxed in battle. All Pokemon found within The Galar Region can Dynamax except for Zacian, Zamazenta and Eternatus (as well as Ditto when transformed into one of the three). Certain Hold Items like the Choice Band, Choice Specs, and Choice Scarf won't work while a Pokemon is Dynamaxed, and so the effects of the ability Sheer Force. Moves that cause a Pokemon to Flinch or Force Out of Battle will lose their secondary effect when used against Dynamaxed Pokemon, and Weight-Based Attacks will be completely ineffective against the same.
Additionally, twenty-seven Pokemon can Gigantamax instead of simply Dynamaxing. Gigantamax Forms are even bigger forms that also include different appearance for each of these Pokemon. These forms are only obtained if you find that specific Pokemon in Max Raid Battles as Gigantamaxed or during a Pokemon Event. When a Pokemon is Gigantamaxed, they also gain access to unique G Max Moves that are exclusive to each of those given Pokemon in their Gigantamax Form.
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