In order to explain the OPness of the loot skill you can say that the first owner looted the origin energy manipulation from the previous supreme and used it to rule over the era. Or smth like that.
It's so strong lets say there is someone with a strong support/auxiliary talent, but the grade is not height he can just give them a single.
He is literally a machine to create superpowers, I hope there will be a faction building arc
Thegoodduy