stormrazor is a bit useless

Because stormrazor isn't really that useless. It's more of a niche item now, considering it's not too good without other energized effect items, but it can be very strong on champions that take fleet footwork, and one or two of the other energized items.

Stormrazor now costs 3100, so let's do some math to see if the item is worth the cost. The 55 AD it grants is 1925 gold in terms of longswords, and the Attack speed is 25% which is about another 600 gold, 2525 gold value so far. But then include the fact that you basically have a built in glacial augment that is decaying slow rather than increasing slow, which imo is better as it gives you sudden kiting potential. For ADC's, that is very powerful considering most ADC's are intended to not have much CC to make up for their damage output, and an item like this is very strong. It also increases heal of fleet footwork by 30%, the number of bounces of statikk shiv by 30%, and the range of RFC by 30%, and I may be wrong but I assume the energized damage is also increased by 30%. To put that into context, Caitlyn with RFC and statikk can auto you from 850 units away, (650 base plus 150 RFC, + 30% buff which is about another 50% = 850 range). That is the same range as a twitch in his ultimate. If you have one of the three items, I believe it also increases the slow by 30% as it states "Your other Energized effects are 30% more effective and also slow their targets by 40% decaying over 1 second". It doesn't increase the slow with just stormrazor, but since it applies a slow to other items energized effects, those should in theory slow as it's part of the other energized effects. I may be wrong with some of this though.

It's definitely not a bad item, but it's not one you should rush or get early on. It's more of a lategame item that you combine with RFC or statikk and gives you more teamfight potential with the slow. I personally think it's a pretty good item, and it can be very powerful for lategame teamfights, but not as strong if you don't have any other of the energized effects or you rush it.

I always hated stormrazor because it was a must buy first for most ADC. I felt shoved into that. Now this is more what of what I and most other ADC mains want with stormrazor. I hate being forced to do a build path because its so much more effective than others.

Don't buy it first, get it AFTER a Zeal upgrade(so 3rd or 4th) if you care about the effect/Use Footwork. Enjoy.

Its not a "bit", its totally useless. You dont have slots to fit in this item. Its an example build. You can modifie it a bit, for if mr/cc rem. necessary. But in the end there is no space for stormrazer since all other items are better and more crucial.