the Heart of the Freljord
Braum's basic attacks apply Concussive Blows. Once the first stack is applied, ally basic attacks also stack Concussive Blows. Upon reaching 4 stacks, the target is stunned and takes magic damage. For the next few seconds they cannot receive new stacks, but take bonus magic damage from Braum's attacks.
1/3 · BRAUM, THE HEART OF THE FRELJORD
2/3 · DRAGONSLAYER BRAUM
3/3 · CRIME CITY BRAUM