How do they synergize with Rageblade? They seem to in some regard, but inefficiently because a lot of champs are every third hit, and Rageblade is every other...?? I am only concerned with every third hit, on-hit passives.
ProtestantCaesar3 votesI don't think they do at all. On-hit effects, like Blade of the Ruined King, are doubled when a fully-stacked Rageblade gives you a phantom attack. But on-attack effects don't seem to be affected. For instance, even with a fully-stacked Rageblade, a Xin Zhao needs to auto attack three times, never two, in order to knock someone up. His every-third-hit healing and guaranteed reduced-damage crit will also be only every third attack, not every second. I'm mostly sure about this.
Targon2 votesI think most 3-hit passives are stack-based. So each auto gives you 1 passive stacks and at 3 passive stacks you get the passive effect. So at maximum Guinsoo's Rageblade stacks, each auto gives you 2 passive stacks.
So normally:
AA >> AA >> Passive >> AA >> AA >> Passive
But with Guinsoos:
AA >> Passive >> Passive >> AA >> Passive >> Passive
I might be wrong, but I'm pretty sure this is how it works on 
and 
Power Cosmic1 votesWow such a nice explanation. I 100% understand it now.
Asayake 5150glow1 votesI think most 3-hit passives are stack-based. So each auto gives you 1 passive stacks and at 3 passive stacks you get the passive effect. So at maximum Guinsoo's Rageblade stacks, each auto gives you 2 passive stacks.
So normally:
AA >> AA >> Passive >> AA >> AA >> Passive
But with Guinsoos:
AA >> Passive >> Passive >> AA >> Passive >> Passive
I might be wrong, but I'm pretty sure this is how it works on
No it's just auto + passive + auto + passive... in my experience.
It only gives you an extra onhit proc every other hit, so the first auto is just 1 stack, and then the second is 2 (which procs the ability). Over and over.
I'm pretty sure it doesn't overstack (although it could...), I've built it on Diana and I've never procced my passive twice in a row.
I know it overstacks for Yi (He only takes 4 hits for his first passive proc, because afterward the doublehit instantly gives him one of the stacks)
Bwuceleeroy2 votesI did some testing with this in practice mode, some champs it does nothing, but for others like 
once you hit the 6 stacks the 3 hit procs come on the second shot so vaynes rings will pop on the second shot, same with TF's E passive
Power Cosmic1 votesAwesome thxs.
Asayake 5150glow1 votesI did some testing with this in practice mode, some champs it does nothing, but for others like
Why for TF E?
It takes 4 hits to proc it... ???