Naix Feast

So the question is, naix feast goes through magic immunity and is physical damage. Is it a bug that it goes through omni's ult? I don't get it, is it like the ultimate (i don't care what you got) passive? goes through magic immunity and physical invulnerability??

im not sure, but maybe Feast counts as direct hp removal and thus ignores the ult

It seems to be a unique mechanic very similar to HP Removal as said above. It works on all units except Roshan.

edit: forgot that guardian angel doesn't make you IMMUNE to physical, just "near immunity". so the HP removal thing is probably accurate.

Casting Method: Passive

It's a passive skill, so if your silenced, I believe, you don't get the damage bonus. But I think it goes through magic immunity.

Correct me on this guys if I'm wrong

The way it reads, it doesn't seem to go through any sort of resistance. It is not magical, because it will still happen even if silenced and it will go through BKB. It's related to physical damage since you have to land the hit for it to take effect, but I don't think armor plays into effect. I'll have to look more into it but I'm pretty sure that's how it works.

damage type is physical, gets reduced/amplified by armor/armor reduction

I just tested it & it does not go through omni's ult
& no this ability does not get disabled by silence like other users were saying (not disabled even by doom) ...

Perhaps the enemy lifestealer had mkb which does go through omni's ult because the chance based 100 bonus damage/ministun is magical

for a more clearly explain, it count your target hp, take the percentage, add to your attack damage, and that part of damage will life steal(reduce by armor as dresmasher said)