Side note: This is with Form of the Fire Wind too.
I feel like this might be a little overboard. Yes, the running attack should be punishing, but not punishable with death from full health. I think bosses don’t even have a single attack that can do that. Even Stormfiends DoT won’t murder you unless you already have the bar filled somewhat.
Truthfully I never noticed it in my 355 hours of gametime till one game earlier where it happened (luckily had ult), the situation of getting hit by one might be rare, but I feel like the game should never ever murder you from full health with one attack anyway.