Entity

The Entity is a Enemy Callum fought during the events of the Unknown Era. It is a mighty life form that guarded the plains of the Unknown realm. After being locked in Callum's time machine the time vortex shattered and split The Entity into two different beings.

Level
The Entity can only be encountered through a flashback mission which can be unlocked at any level but you will fight him as Callum who's level is static at ∞.

Combat
The Entity will Mostly use unobtainable spells.

The only way to kill it is to complete the mission as it dies at the end, there is no way to kill it with even the strongest weapons.

Loot
You can search its body (in the form of an ash pile) right at the end of the mission however it has no loot.