need help with the damage formula and skills.

we all know the damage formula, but i need help with how it works when calculating ranges, for example attk gets rounded down before being put into the formula, and such

also, i need an answer to these questions:

is dark aura still a %attack bonus (it states it's a %damage bonus, but that's wrong)
i heard some aran buff now displays in their range rather than being simply passive, what's the name of this buff, and anyone knows if it's truly %dmg, or if it's %attack?

which other buffs increase % damage, but show in your stat window?
ones i know are:
A/DA (is %attack)
Echo (is %attack)
and that'd be it.



formula i had for damage range was:

multiplier * (round down:[attk*%attk]) * {[round down[{round down:[base main stat*MW]}+ static main stat]*%main stat)]*4 + [round down[{round down:[base secondary stat*MW]}+ static secondary stat]*%secondary stat)]} / 100

anyone notice any mistakes with it? not sure if the main stat*4 multiplier is placed correctly


also, does the top range round up? i think it did, but not sure, i know minimum range rounded down though.
thanks stereo for that, still looking for help with the rest.