Ben 10: Shadows (Rebooted)

Ben 10: Shadows is a series by UltimateKai10. It takes 3 years after Omniverse where one of Ben's arms where destroyed by Khyber in a fight that determined the fate of the universe. Ben, 19, realises he wouldn't be around forever so he decides to defeat most foes before he dies. It is expected to 4 seasons.

TBF