Hello this is my second build (my first is (MasterYi, Hall Of Famer) i look foward to reading ur comments about this build.

The reason why i picked the desolation runes and quintessences is because every fiora needs AP.
the Defence seal is just to give that extra armour.
the shielding glyph too make fiora's magic resistance bounnce a little.

the way i built the mastery tree the way i did is too get a little boost in fioras stat's.

You might be wondering why i put 3 darons blade's in the build but it all works out to OWNEGE at the begining.
the boots is because every champion needs boots when their at a low level as for the chain vest just too make fiora a bit harder to kill same with the mercurys threads and the negatron cloak.
the zeal's just to give some extra speed and crit.
fiora would start to lose her ownege so thats why you need a B.F. sword. and a sunfire cape just to make her that more harder too kill HeHe same with the force of nature (this is good to buy if you are vs a AP champion).
the phantom dance only because im a fan of the phantom dancer and for the crit.
the infinty edge is for the extra crit and AD.
Lastly the black cleaver i put this in to give fiora the last AS and AD boost she needs to be and OWNEGE champion.

i put the skiill's in this order to give the what skills u need at the start to get some kills

Exhaust is a good spell to have expesily in chase's.
Flash is good to help get out of ganks.

Summary: hope u Find this build good hehe