Goodra

Goodra (Japanese: ヌメルゴン Numelgon) is a Dragon-type pseudo-legendary Pokémon introduced in Generation VI.

It evolves from Sliggoo starting at level 50 when leveled up during rain or fog in the overworld. Rain instigated by Rain Dance, Drizzle or Primordial Sea will not trigger this evolution. It is the final form of Goomy.