Eidolon: Leviathan
幻獣・リバイアサン [genjuu: leviathan] or 'eidolon: leviathan' in Japanese. References the ability Eidolon that can be used to summon powerful versions of various Eidolons.
Record Keeper

Type: Soul Break, Rarity: -
Target: all enemies, Element: Water, Gauge cost: 1 bar
Learn: Garnet (equip Asura's Rod (IX))
Effect: Deals a twofold Water element summon magic attack on all targets and raises the magic strength of all allies
Category: Ability