Skill Type: Buff 

You call out to your Song-brother linking your actions. When on Crits, the other's Tactical mastery is increased. 

Effects applied to you or your Song-brother when the other heals of hits a target within 50 metres: 

While Song-brother's Call is active, it applies a stacking Outgoing Healing and Tactical Damage buff on hits and heals

Duration: 10s 

Cooldown: 2m