Here's more testing for rudra's storm;
Just to reiterate, its sc properties is darkness/distortion. RS > RS is darkness. RS > evis is darkness. Aligned with snow/aqua/shadow gorget. It appears to have no attack bonus just like other 1-hit relic ws.
All tests are done at 100% or with sekka against wild rabbit using SA.
137 DEX, no gorget:
1737
1597
1721
1596
1790
1783
1647
1658
1638
1789
1833
1847
1831
1600
1638
1783
1617
1614
1810
1857
1604
1779
1843
1706
1785
1679
1677
1816
1804
1870 ***
1702
1801
1814
1620
1753
1598
1844
1649
1662
1605
Same DEX, with aqua gorget. STR/atk is slightly lower but it shouldn't matter
1886
1887
1900 ***
1870
1882
1627
1831
1623
1728
1620
1859
1684
1863
1884
1696
1670
1691
1823
1711
1895
1845
1783
1763
1873
1667
1852
1647
1846
1892
1847
1682
1707
1681
1858
1815
There's a thread in alla mentioning about the second tier critical bonus trait for THF85. It haven't been tested much, but from the number it looked like the total increment become 8%, and that's what I use here. The calculation below might be off pending more critical bonus testing.
((D + fSTR + WSC) * fTP + DEX) * pDIF * CritBonus = MaxDamage
((45 + 13 + WSC) * fTP + 137) * 3.15 * 1.08 = 1870
((58 + WSC) * fTP + 137) * 3.402 = 1870
(58 + WSC) * fTP = 1870/3.402 - 137
(58 + WSC) * fTP = 412
58fTP + WSCfTP = 412
WSCfTP = 412 - 58fTP
WSC = (412 - 58fTP) / fTP
WSC = (412/fTP) - 58
((58 + WSC) * (fTP + 0.1) + 137) * 3.402 = 1900
(58 + WSC) * (fTP + 0.1) = 1900/3.402 - 137
(58 + (412/fTP) - 58 ) * (fTP + 0.1) = 421
412/fTP * (fTP + 0.1) = 421
412 + (412/fTP * 0.1) = 421
412/fTP * 0.1 = 9
412/fTP = 90
90fTP = 412
fTP = 4.677777777777...
It comes out at ~25% DEX and ~4,677777777... fTP, but when you plug this in, the theoretical damage came out lower. The next closest mod would have been 30% DEX. With that, the fTP is around 4.5, and this actually fit the test damage very well.
Using 30% DEX, 4.5 fTP, truncating every decimals
137 DEX theoretical max damage: 1873
My max damage (n=40): 1870
137 DEX with gorget theoretical max damage: 1905
My max damage (n=35): 1900
Using ejiboo's data:
81 DEX theoretical max damage: 1468
His max damage (n=21 if you count the STR test): 1406
112 DEX theoretical max damage: 1696
His max damage (n=11): 1637
I think it's safe to assume that 30% DEX and 4.5 fTP at 100% TP is the modifier or very close to it. Even if you use evisceration for solo ws, I'd say this is still the definitive main hand dagger for thief aside from relic/mythic/empyrean. Dancer is out of luck, the WS suck without SA/TA, doing like 800 max damage. The same goes with twashtar.