Pretty broken. Don't know why none realized until now.
The healing is basically calculated this way: Ad*resistances*lifesteal*1.3+BrkBonusDmg*resistances*lifesteal*1.3*1.3
Also, Heal power works on bork's damage, don't know if that's intended. (is it considered a drain effect?)
PS: It applies twice only if the healing is taken from lifesteal, it doesn't apply twice if it's taken from DD/Hextech
Sunborn Saviour1 votesIt applies twice because it increases the heal from your normal auto's lifesteal and the BOTRK on-hit's lifesteal.
AnataBakka1 votesthen it applies thrice? since i said it applies twice on bork's bonus damage. On the normal auto sv is only applied once
Sunborn Saviour1 votesthen it applies thrice?
That is my question.
If as you say it actually heals you an increased amount of 60% you should show us an screenshot with the corresponding maths.
If on the contrary it increases the heal from 
's bonus damage 30% as intended, it might be still showing 3 health gains on hit. One corresponding to AA's lifesteal, another corresponding to bonus damage's life steal and another corresponding to the total heal increased by spirit visage.
If so please confirm, if not please send a screenshot with the corresponding maths that proves the alleged bug.
PS: if it is only showing 2 health gains on-hit that would perfectly make sense since heals both normal damage and on-hit damage.
AnataBakka1 voteslook at the formula above. That's the math that calculates it. If you take bork, lifesteal and spirit visage you'll get the correct number using that formula. Wherever or not the formula is bugged i don't know, seems like it is since only the bork bonus damage heals from 70% while the basic attack heals for the usual 30%. I'm too lazy to make a screenshot and i don't actually care. I reported it so it's riot's job if they want to fix it or not.
When i see that the meta becomes spirit visage + bork and people kill me with it, that's when i'll start being more seriously. Atm nobody uses it other than me and aatrox.