Being a reaper born of a magickal oath so terrible it took form, appearing in places where much magick is woven, searching in vain for the words that gave it its existence. They may travel the breadth of the world in a mere instant, a matter of much interest to many scholars, pirates, and soldiers, for if Man were able to grasp the means by which such transport is effected, it could change the very face of Ivalice.
Though it be the avatar of an evil soul, this does not mean its heart is wholly given to corruption; for as there exists no perfect good in this world, so there exists no perfect evil. Take the oversoul, for instance. Truly as black a concentration of evil as ever there was, but here, too, we find a sliver of goodness: the Soul of Thamasa. For it is truly a light of unclouded love, and a boon from heaven to the saviors of souls.
Oversouls spawn in the Necrohol of Nabudis only six times per visit. The player must slay twenty foes for the first one to appear, then fifteen more for the second, and ten more, and five more, and three more, and finally one more for the sixth spawn. Afterward the player can leave the Necrohol of Nabudis and reenter to make it spawn six more times. Unlike other enemies (with the exception of Helvinek), Oversoul can cross map boundaries; the only way to deal with an Oversoul is to either kill it or zone out from the Necrohol completely.
The Oversoul is not terribly powerful, though its Annul attack drains a party member's MP and is rather annoying. They have several spells to instantly kill a party member.
The player should attempt to keep track of how many Oversouls they kill, as once all six Oversouls have spawned and are killed, the Helvinek instantly spawns in their wake.
Another strategy to instantly defeat an Oversoul is to simply toss a Phoenix Down at them.
[view·edit·purge]In New England transcendentalism, oversoul is a spiritual essence or vital force in the universe in which all souls participate and that therefore transcends individual consciousness. Oversoul can also be the universal mind or spirit that animates, motivates, and is the unifying principle of all living things. It's a concept in the transcendentalist philosophy of Emerson and others.