Also when you are making the treachery for mercenary, the armor should not be ethereal because it raises the defense. The more defense the mercenary has, the lower chance it'll be to proc the fade on. Best is to wear something like 3os archon plate without enhanced defense or similar "light" armor type..

makes no sense imo. the point of an armor is to protect the merc, so if a high defense armor prevents a hit, this is kind of the best-case scenario anyways. no need to go low def just to proc the effect, better prevent the full hit in the first place (since not getting hit equals 100% dr...)

but I agree with this concept if you just use treachery as a prebuff ofc

Merc gets more perks of Fade than 200-300 extra defense points.