Empowerment - Empowerment Prolongation

Empowerment - Empowerment Prolongation is a Bard weapon empowerment that extends duration of existing empowerments. Duration extension is applied with a 2 second delay which, together with inspiration being a finite resource, does not allow infinite extension of empowerment duration. The empowerment has 4 levels, with each level increasing in power. Unlike other empowerments, it does not show up in empowerment bar and has no duration.