>>531050486
Deadly Blow alone has a bonus that makes it do more damage depending on missing health.

The level 3 ability causes damage DURING your 10 seconds of Rage to become more damage added to your next Deadly Blow.

So, you are Berzerk and pop Holmgang and take 50000000 million damage so you don't die.
>2000 potency from damage taken during Rage
>250 potency from Deadly Blow at low health
>200 potency from Deadly Blow base damage
>2450 damage in total damage with your Deadly Blow

HOPE THIS HELPS