(Chaos IV) Armageddon Ouroboros

Lore
Hoping to prevent the end of the world, stalwart souls step forth to battle against Ouroboros. Swordsmen, knights, archers, lancers, magicians, and even other beasts of every affiliation will band together for the sake of their shared home.

Acquisition
Evolve (Chaos I) Armageddon Ouroboros with Ouroboros Catalyst three times.

Name origin
The Ouroboros is an ancient symbol depicting a serpent or dragon eating its own tail.