Yveltal is one of the Pokemon from the legendary Yggdrasil trio, which is lead by Zygarde. The Yggdrasil trio originate from Kalos and comprises of Zygarde, Xenrneas and Yveltal.
Powers and Abilities
Yveltal has the power to absorb all life energy. When Yveltal reaches the end of it's lifespan, it expands it's wings and steals the life energy of every living being around it, before it transforms into a cacoon and goes to sleep for a thousand years. Yveltal is currently the only pokemon known that can learn the move Oblivion Wing.