Buy debuff resist
Buy Blood Tribute (on Shiv)

>Dummy 1
No resist - 2.77 sec
>Shiv 1
Debuff resist (30% resist) - 1.88 sec
>Shiv 3
Blood tribute only (50% debuff resist) - 1.38 sec
>Shiv 3
Debuff remover + Blood trib + spell breaker (idk, like 65-70% debuff resist? doesn't tell you the actual math with trib active) - .78 sec

Seriously it cannot be understated how good 50% debuff resist is. I've done some testing and UNFORTUNENTLY debuff resist ONLY affects duration of abilities but seriously it can't be understated how cutting ANY debuff timer in HALF really fucks over so many characters/builds. This will add a SHOCKING amount of survivability i'm telling you guys. Make an infernus' superior duration completely ineffective vs you.

Blood tribute works with shivs deferred damage so in reality shiv is only draining 24 health per second with bloodletting t2 and the deferred damage is partially counteracted by your regen and obviously bloodlettings active. Through in radiant regen to give you stronger regen in a fight + healing you when you use actives (including blood letting itself). Very underrated