Fiora double sustain items question.
So I see a lot of Fioras in bronze/silver (not sure about other divisions) build Hydra + Bloodthirster.
I get that the massive ad+life steal is great between these two items but it got me wondering why people don't build
over 
I imagine you'd still have plenty of lifesteal between the two plus your passive. AD wouldn't change. But the main reason is the CDR. Fioras standard build doesn't bring many options in this stat and this seems like an easy way to get more ults out without really losing anything. Not to mention you'd also save 300g in the meantime and get the mana vamp passive (just in case you need it).
the one item that can stop her becomes null and void
, as