This skills functionality serve no purpose whatsoever both in PVE and PVP. Here's a quick REAL balancing for Warlocks overall just with this skill being changed. Just remove the meaningless healing and make the skill usable while under any Crowd control ability or stunned. Will help Warlocks avoid getting instantly demolished by classes that can easily avoid the Warlocks Crowd control skills like BD, Druid, Barb etc, and give them a fighting chance.