need help with the damage formula and skills.

do me a favor, add up all of your M.attk, then multiply that by 1.35 (if your weapon has %magic attack, add it to fury) and calculate your damage range.
or give me the number for total m.attk you have, total int and luk (don't forget to count attack from skills like empress blessing and whatnot.)

I already barked up that tree. Since the bonus is multiplicative it doesn't matter where you put it in the equation. I have done Range * 1.35, MA only * 1.35, MA/100 * 1.35, etc. It always creates the same result (29304)

For posterity, here are the source numbers:
Int 1613 (matches the screen)
Luk 166 (matches the screen)
MA 328 (not visible on the screen. Includes all passive bonuses.)
Visible range without Fury - 20622-21707
Visible range with Fury - 27726-29185

Non-Fury calcs
1.00*(4 * INT + LUK) * (Magic Attack / 100)
1.00*(4 * 1613 +166) * (328 / 100) = 21707 (matches screen)

Fury calcs
V1) 1.00*(4 * INT + LUK) * (Magic Attack / 100) * 1.35
1.00*(4 * 1613 + 166) * (328 / 100) * 1.35 = 29304 (does not match 29185)

V2) 1.00*(4 * INT + LUK) * (Magic Attack * Fury / 100)
1.00*(4 * 1613 + 166) * (328 *1.35 / 100) = 29304 (does not match 29185)

The closest I can come to making the range correct is to use 35% as a simple MA%. The 328 MA I have is 322 with 2% MA (+6). If I calc Fury as part of that and use it as 37% MA then the calc becomes:

V3) 1.00*(4 * INT + LUK) * (Magic Attack * Fury / 100)
1.00*(4 * 1613 + 166) * (322 *1.37 / 100) = 29195 (does not match 29815, but close enough to be in rounding error range)

This may be the answer.

EDIT - It is the answer. I plugged it into my Excel sheet and now I get the exact range of 29185. At least now I know exactly how Fury is figured.