Devastating Blow

Devastating Blow is a talent in.

Description
"Broadens the rogue's knowledge of critical anatomy, increasing the damage done by Finishing Blow."

Exact damage calculation
Devastating Blow talent increases the damage bonus dealt by Finishing Blow ability by 2% per percent of enemy's Endurance lost, changing its formula to Damage Bonus = 50% + (5% per each % below 50% Endurance)