P Concussive Blows
Passive
Innate: Braum's basic attacks and Winter's Bite each apply a stack of Concussive Blows to their target for 4 seconds, refreshing on subsequent applications and stacking up to 4 times. Once the first stack has been applied, any allied champion's basic attack applies an additional stack to the target on-hit.
The fourth stack against a target consumes them all to deal 26 – 196 (based on his level) magic damage and stun them for 1.25 – 1.75 (based on his level) seconds.
This effect cannot apply to the same target more than once every few seconds. During this immunity period, affected targets take「 bonus magic damage equal to 40% of the trigger damage 」from Braum's basic attacks.