As strange as the title is worded, I have a question on exactly how abilities that offer a percentage buff stack on one another. How does the game calculate bonuses such as having Fey Illumination and Rouse on a fairy or the passive 5% from nocturnal sect and 40% from Synastry.

I curious if anyone knows if the percentages are stacked, calculated on a buff priority order, or if it calculates it in the order of buffs applied.