Necrozma's role was expanded in Pokemon Ultra Sun and Ultra Moon to include a feature that allowed it to fuse with either Solgaleo or Lunala to create its Dusk Mane and Dawn Wings forms.

This allows the Pokemon Y mascot to exert incredible offensive pressure, especially when equipped with Oblivion Wing. Dusk Mane Necrozma helps Yveltal's Fairy-type weakness, while Dragon Breath ...