Gusion

Gusion is one of the 3 Spirit dropping bosses in the Boundaries of Solomon, unlike the previous area, in the Boundaries of Solomon only 3 bosses drop spirits and the rest drop Accessory upgrades. The Stat requirement for equipping Gusion's gear is 50k and you use his spirit with Samuel's gear to acquire it. Gusion has 100 mana. As soon as you approach him his mana will drop to 75 and will continue to drop with every successful hit he makes. At certain mana intervals the amount of meteors he drops with each hit will increase, dealing more damage and in a larger aoe. Evasion can be used to make him miss attacks and not drop any mana.

Drops:

Gusion's Spirit

Guardian Gauntlets

Grimoire of Oblivion - Meteor