I’m just gonna say how I think it works and why I believe you’re on a different page, because you’re operating off an assumption that I think is incorrect.
Basically there’s LHApply % and LHProc %
Apply% is basically what you’re using to trigger the LH, so Bone Spear is 59%, CE is 47%, Tendrils is 24% using my stats. I do believe minions have an Apply% and it probably does vary.
Proc% is what you’re trying to proc, so mendeln is 10%, Hewd Flesh is 12%, Decrep is 10% to stun, 15% to CD reduce, and whatever other Lucky hits on your gear has it’s own %.
Now the question is what Proc’s are even applied to your minions, and this is where I think the issue is in our understanding, because I believe that minions don’t access our gears Procs, I think those only apply to the necro himself, whether that’s a bug or not is debatable, whether it’s even true or not idk, but my testing has suggested it is true.
However Decrep puts a debuff on an enemy, it isn’t just attached to our character directly like Proc’s on our gear is, and the debuff on the enemy GRANTS anyone that hits the enemy a Proc chance, aka, it also grants it to minions, and assuming the minions have an Apply%, they can then use it to proc decreps Proc’s. I don’t know if they can proc Hewd Flesh or not, but considering that Decrep aura Proc% is a mere 15% and it procs constantly like we all know how fast that procs with minions attacking it, then it’s safe to assume that if Mendeln could proc from minions, and it being 10%, it would be up literally 24/7, and it’s not. It’s objectively true that it doesn’t proc constantly from minions, anyone can see that, and it doesn’t matter what minions you use, it just doesn’t.
As for BCE proccing mendeln, i do think it does proc it, but it often feels like it’s not proccing as often as I would expect, expecially when doing Explosive Mist to cast 5 BCE’s, for some reason I feel like that should mathematically proc like once per mist cast if fighting 4 or more enemies, and that’s also just not how it works. For manual casts, it may work as intended, again I’m not sure. I’m not even sure if AoE does indeed multiply the amount of lucky hit chances we get, but this is one of those things where I’m just open about what I do and don’t know, and I don’t know that.
So yeah, I think you just assumed gear obviously applies to your minions and its only a question if they have Lucky hit apply rate or not, which they do when you look at decrep. I think that was where you went wrong with your assumptions.