Where is this Riven build coming from ??

I got a Riven today using this build and honestly , it was legit troll and it was terrible but apparently it's not the only Riven player to use this , WHY? What is good in this other than getting instantly bursted? Here is the build: {{item:3508}} {{item:3173}} {{item:3031}} {{item:3046}} {{item:3812}} and the last item is up to you but honestly, what is any good in this ?
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