Dynamax

Dynamax is a relatively new phenomen that started to occur in Galar after the first Dynadens were discovered. It damages the DNA of Elementals and can‘t be reverted.

Physiology
If an Elemental gets in touch with a Wishing Piece, a stone found inside the Dyna Dens, it fuses into their body changing their DNA. Dynamaxing and it‘s side effects occur in phases. Unlike Mega-Evolution, those affected remember everything they do in this state.

This can cause a variety of different damages, raging from brain damage causing more violent behaviour to less obvious changes like a change in personality. In some rare cases its said that those Elementals act like they are being controlled by a parasite.

Trivia

 * The first Dynadens appeared about 150 years ago with unknown origin