Mystic Vulnerability aslo causes a bit of confusion its passive is -12% spirit resistance for 6 seconds but what happens after that. Does it have a downtime before it happens again its not really clear about the effects are.
Leech paired with any other lifesteal item other than mystic reverb is short a 7% increase. When paired with Mystic reverb its short 4% of an increase.
Mystic Reverb only increases spirit lifesteal 11% when it says it gets a 14% increase when paired with Spirit Lifesteal. The lie detector determined that was a lie. Lol. The stats say its only a 11% increase. When paired with Enduring Lifesteal or Slowing Hex you only recieve and additional 9% spirit lifesteal.
When you equip Slowing Hex by itself it shows it buffs a 10% spirit lifesteal..... when paired with Spirit Lifesteal itself it only is increased by 8% and not 10% like its supposed to, same thing when combining Enduring Lifesteal with Spirit Lifesteal. Also shouldnt if you buy enduring first and it grants you 10% then you think that you would get an extra 10% from slowing hex but in reality you dont.
when adding all the items you can to stack spirit lifest steal you come out to 98% without slowing hex and you only get up to 67%. This is including Spiritual Overflow, Enduring Spirit, Spirit Lifesteal, Crippling Headshot, Leech, and Mystic Reverb. Not counting Slowing Hex because you actaully gain no addtional life steal at all after already having Enduring Spirit.
When you cast your items like Acitve infuser while enduring spirit is equipped your total spirit lifesteal is supposed to be 30% when it only reports 28% when casting Active Infuser equipped with Mystic Reverb you only get 31% you are supposed to have a total of 34% for the duration of the Active Infuser ability. When paired with Leech your initial is 32% then its supposed to buff to 54% but it only goes up to 46%. When paired with Spirit Lifesteal your supposed to get a total of 42% you only get 38%. When Spiritual Overflow is equipped you get an addtional 18% but not the 20% its supposed to give you when activated, this same thing applies to Crippling Headshot.
Soul shredder bullets doesnt report your getting a lifesteal at all as the passive.
Moral of the story all lifesteal items passive or active when combined with another show inaccurate stat increases compared to their respective item buff stat.