Leviathan (Bravely Default)

Leviathan is a Nemesis in Bravely Default.

Battle
Leviathan has two forms, and approximately every three rounds it will switch. In High Altitude, Leviathan automatically evades all physical attacks, and uses Blizzaja to deal major Water-elemental magic damage to the whole party, along with Envy to reduce attack and defence, both physical and magical. In Magic Resist Form, it will use Bite and The Last Light to deal physical damage, with The Last Light striking all targets, while having high magical defence. It starts out in High Altitude, without the inherent evasion of said form.

Strategy
Due to the forms used, it is highly beneficial to have a group focusing on either physical or magical damage, using Default and healing while not attacking. Also, due to the high, group-wide damage, it is a good idea to group-cast Cura, or an equivalent, nigh constantly.