Help on skill serenity

Current upkeeper: Oya
Using time      : 9
Skill cost      : 10
Skill type      : generic
Affecting stats : Wis, level, masteries
With this skill the demon hunters can focus their inner strength, granting
them great calmness even in the heat of battle. This uncanny serenity allows
them to regain their strength at greatly increased speed as well as protection
from stunning attacks.

Sense weakness < List > Shadow fingers