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For the Gigantamax variant, see Gigantamax.

Eternamax (ムゲンダイマックス, Mugendaimaxlit. Mugendaimakkusu) is a feature appearing in Pokémon Sword and Shield. It is a variant of Dynamax and Gigantamax; while any Pokémon can Dynamax and Gigantamax, Eternamax is only exclusive to Eternatus. Like Gigantamax, in addition to changing the Pokémon's size, it changes its appearance as well, thus works similarly to Mega Evolution. This feature, however, is unaccessible. You can temporarily use it while using Eternabeam, however.

Pokémon that can Eternamax

Pokémon Eternamax Characteristics that change when Eternamaxing
890Eternatus Pokémon HOME.png
Type Poison.gifType Dragon.gif
890Eternatus Eternamax Pokémon HOME.png
Eternamax Eternatus
Type Poison.gifType Dragon.gif
Ability: Pressure
PS: 255 Speed: 130
Attack: 115 Defense: 250
Sp. Attack: 125 Sp. Defense: 250