I've tried Devourer Mordekaiser a few times, and while it's decent, the Phantom Hit on Devourer doesn't proc his Q more than normal. It still takes 3 hits. I'm under the impression this is intended, but it would be quite a nice buff to his jungling power and it would correlate with... every other #-hit ability/passive and Devourer.
FACE THE WlND1 votesHe would lose damage...
trash sion1 votesHow? I'm suggesting that the damage from two of his Q procs be applied in one auto, kind of like Xin Zhao skipping an auto but getting the same damage.
(or maybe Xin loses damage and i'm dumb)
MilfHuntUnitXJ91 votesThey are removing Devourer next patch and replacing it with Bloodrazor.
The On-Hit effect you're describing will be moved to 
which is getting a rework, I would ask them about that one instead.
Personally I think Morde really would need that buff, so I agree. Upvoted.
trash sion1 votesGood point, forgot that there's no point as devourer will be gone by the time the next patch comes about. The thing with phantom hit is that it's treated as another auto, whereas the passive on Guinsoo's will just apply onhits twice.
kagepaladin1 votesi asked riot about that last year or so when the morde update was coming out they said it would not be a thing ill try to find the original post for ya.
Annoxis1 votesNo. In the case of Xin Zhao or Rek'sai, both of their Q-Spell count as three on-hit effect, but in the case of Mordekaiser, it function like a auto-attack modifier. The nuance is slim, but it doesn't allow any auto-attack reset (through Titanic Hydra, for example), or any way to artificially increase the damage rate of the spell other than attack speed.