Anyone know some good Diana mid guides?

most guides aren't worth reading. i recommend using http://www.probuilds.net/

search for your champion and look at the items pro players build for it. when you see item variation think about it intuitively for reasons. Example: Abyssal - maybe he was up against 3 AP champions; ROA - maybe his team didn't have a front line to absorb damage.

https://www.youtube.com/watch?v=ElZnYSSB_Mk found a voyboy vid of patch 4.20

Step 1: don't Step 2: here's how you jungle Diana ...

well on your guide the top ones a re voyboyy XD his builds are pretty simular, main dianas are assassin ap zeds imo, thats why i feel only 1 or two items slots will determain on different games

yea, like the matches of his, when hes against a kat, he rushes abyssal for that mr and ap, so yes, follow either, and keep in mind what and when to buy

I am a Diana main (obviously). Anyway, most of what I learned was from watching S Diana 2 who is the highest ranked Diana main. He is frequently on the featured spectacle games. You can look at his runes and masteries to get a better idea of how he plays.