Hello my name is tequilataco and this is my first guide.As you already know this guide will be featureing Diana. I am sorry if my spelling and/or grammer isnt perfect but im not from GB or USA so my naitive language isnt english.
Before you vote please read the intire guide and test it out

-Great burst damage
-Short CD on ulti
-Great ganker
-Clears jungle fast
-Can go mid top or jungle
-Easy to pick up

-Gets focused
-Shes squishy
-Hard to master

Marks: Greater mark of Alacrity or Greater mark of Insight

I go for Greater mark of Alacrity if i want the atack speed but sometimes i go for the Greater Mark of Insight for the magic pen.Imo it all depends on your own playstyle.If you want the magic pen take the Mark of Insight but if you want the as then the Mark of Alcarity.IN the jungle i prefer the atack speed over the magic pen but thats just my playstyle.

Seals: Greater Seal of Vitality

This is a pretty standard seal. It gives a nice bit of HP.It is basicly a free Ruby Cristal. I could see it being replaced by an aromor or magic resist seal.Try it out and see what fits in better for you

Glyphs: Greater Glyph of Force or Greater Glyph of Alacrity

Same as with marks take the one you like more.One gives atack speed and the other AP per level.I like to take the AP per level glyph with the atack speed mark.Experiment and see what fits in your playstyle better.

Quints: Greater Quint of Potency or Greater Quint of Alacrity

For the third time take what you think is better.Imo i like the AP quint more but the atack speed one is just as good.

My usual set up is atack speed marks, hp seals, ap per level glyphs and ap quints.

I take the pretty standard 21/0/9 masteries.Taking atack speed, improved summoner spells, CDR and AP in offense.And in the utility tree i take the mana regen, mana per level, a little bit of movment speed, improved summonor spells and extended buff duration.With her W ability i dont think she needs any more defense so i left that tree blank.

The best summoners spels in my opinion are Smite and Flash.U can also take Ignite or Ghost.The other spells are not mentioned beacuse i think they arent so good on her.

The item build gives mostly AP and atack speed with a little bit of HP and MR.Some items i could see being used on Diana other that these ones are Rod of Ages, Guinsons Rageblade, Frozen Hart, Nashors Tooth and Zonyas Hourglass.

The route i take is blue buff-wolves-wrathes-golems-red buff.I usualy start ganking at lvl 4 but you could start earlyer.

When ganking go in with your Q the ulti on them use your W, if they try to run pull them back with your E and if they flash just ulti back on them

I am aware that this guide isnt much to look at and it needs some more pics and videos. It is pretty short but it gives info about the champion.
I hope you enjoyed reading my guide if it helped you please vote up on it

Ty for taking your time to read it.Please tell me what you liked and/or disliked about my guide in the comments and tell me what scores you got with it.