 Necrozma may undergo Ultra Burst if it is in its Dusk Mane or Dawn Wings form and holding the Ultranecrozium Z Z-Crystal, which will allow it to transform into Ultra Necrozma.Like Mega Evolution, Bond Phenomenon, and Primal Reversion, Ultra Burst increases Necrozma's stats and is a temporary transformation.Dynamax (ダイマックス "Daimax") and Gigantamax (キョダイマックス "Kyodaimax") are mechanics introduced in "Pokémon Sword" and "Shield".