Did you know duskblade, compared to its peers, is actually an average item?
Storm razor also isnt all that strong unless youre ahead... As its niche in the marksmen itemization is to strengthen an already secure lead unless youre an assassin, in which case its a best in slot.
The problem with both of them is that they add single target damage to things that already have high single target damage and low counterplay.
Duskblade needs to lose its blackout passive and id love to see storm razor get changed to also scale with lethality.
Like...
Here.
Dusk blade proc:
20-150+1.5 lethality
This change lowers the damage of dusk blade while giving incentive to buy multiple sources of lethality.
Storm razor proc:
deals 140% crit damage, +1% per 1% crit chance and +1% per 2 lethality up to 200%
THIS change makes it less powerful early, gives it multiple power spikes, and gives it synergy with more kinds of itemization. Instead of JUST needing SR+shiv, you now need SR+zeal iteam+zeal item/IE. Or you need SR+shiv+60 lethality. Both are good options for delaying power a little, and it wont matter especially on a snowball class like assassins and marksmen.