Allthough not particularly overwelhing, your guide is working. You should advertise your tanking capabilities with your shield more, and I advise you to by at least one HP item, an example would be Spirit of the Ancient Golem. Because CV is the most difficult to use summoner spell, you should teach your readers how to use it propely, they will realize its qualities only if they succeed with it.

If you go 21 utility you should get Intelligence and maybe some CDR runes to get your remaining 10% CDR, thats important for your duelling and tankyness. Also, dont get xp masteries and runes, they are not used for a reason. Flat stats like AP or MS give you the same advantage. I also doubt Kage's Lucky Pick. Its true that money generation can help you farm in theory, but acctually you are wasting too much gold in a crucial period of the game. Also, don't get Ninja Tabi, Boots of Swiftness do the job and are cheaper. Get a Doran's Shield if you want defense. Lich Bane isn't worth it unless you have more AP, get a triforce or gauntlet instead.

I see absolutely no reason to build defensive as Diana is supposed to be a burst ap carry.

el oh el

Get to work turd :P

Great guide man!

Right so when my team decides to intentionally pick a "weak" Jungler and ambush an invade, clearly the invade was still the perfect choice.
Even when it gets shut down completely, and likely loses the game.
Right, that is exactly what the Pro's do man.
Maybe someday you will have a thought of your own..
Until then, stop trying to use Pro's as some kind of excuse to play like ****.

Everything sucks until the Pro's do it.
That is what makes them Pro.
They take ideas that others think are **** and do well regardless, BECAUSE THEY ARE ****ING PRO.
Jackass.

Double Aegis a **** idea too?
Gonna Poo Poo on that one too?
Because that was a strat used by TSM this weekend to completely shut down their opponents.
And if you did it last week I promise you, everyone would have **** on it.
Including you.

w/e im done trying to help.Also yes you do invade if the jungler is weak exp:amumu. Learn to take critisim better and actually listen to people's opinions and consider them more or atleast explain things is my last words of advice foryou.

Edit:FTR i never voted.

You didn't help man, I'm sorry you felt you were helping.
Don't blame me for not reading my guide.
If you want more information on why I do what I do, then ask.
But at least read the source material first.
Your post made so many assumptions based on nothing but opinion that it I CAN'T take away anything useful.

You are the one ignoring what I said, don't twist it like it's the other way around.

You make a lot of assumptions on what the enemy team will do.

An invade is not done because the Jungler is weak or strong.

An invade happens because the enemy team thinks it has an advantage and can pull it off.
It is very risky and losing FB because of a failed invade can put even a good team behind significantly.

An invade is NOT automatic, no matter what you pick.

I never said that Flash was ONLY a crutch.
I said that it ******ed your growth as a player to USE it as a crutch.
Creating new functionality for a champion that does not have any other way of having that functionality IS a good idea.
Having a reset button for when you **** up however, is not always the best choice.

And no, I cannot mention other boots.

Ninja Tabi is a fundamental element of this build.
It is the focal point of many combined concepts.

Saying that other boot options enrich the build is like saying that apples taste best when they are oranges.

Way to completely blow off my help.Also flash can be used veryoffencivly to secure kills and tell me please tell me which pros use CV as a jungler?Name 3. because in the last few tournys no one took cv at all or it was rarly taken also when it was taken it was on the support not the jungler. Also people do think thanks why a very popular build is sorcs into haunting guise...true damage yeah thats op. Also diana requires blue for her first clear, any good team see's you withCV and not flash they will invade, you won't b able to get away since you dont have flash and now you are behind as the jungler GJ! Also if you say you willcv them and then run 1. it's luck if u hit them 2. you only get 1 shot 3. it could buy you a false sence of security getting you killed. 4. if you have CV you can't invade safely and they can. and 5. you have 0 get away now and you aren't very tanky.

I said more items viriaty would help, I never said don't put haunting guise just move the order was suggested if thats to difficult then just don;t get it.

w/e ignore me on the ninja tabi suggestion of improvement, you canatleast mention other boots and not just say these are the best.

reading all the stuff you said about flash, yeah you clearly don't undrestand how to use it properly if it's a cruch and thatsit.

Finally some decent input.

The HG and weird marks are for EXACTLY 30 MPen.
This is one of the magic numbers.
A carry that builds no MR will have 30 MR by default.
A lot of AD carries build full glass cannon. A BT for LS is really the only sustain or defense they prioritize.
Diana has no difficulty engaging an AD carry, however they position.
When they use X ability to juke, she can just ult again and stick like nobodies business.
30 MR vs. 30 MPen = True Damage.
It's just that simple.
And there are alot of AP carries that build this way too.
Even if they build a little MR, 30 MPen goes a long way, usually knocking them back down to a base 30 or thereabouts.
Void staff requires at least 50 MR to be built to offer the same total MPen as HG.
With 10 additional flat MPen, this jumps to 60 MR built to offer the same value.
I do not prioritize VS because I do not plan to nuke tanks.
Also it offers no health and is more expensive.

Concerning the Tabi, it's all about economy man.
At full build it offers the armor value I want at the price I want.
There is no reason to sell it, as that will cost more money and require another armor purchase.
It is a new item for me to start playing with.
The idea stemmed from Cloth/5pot and Boots/3Pot.
Combine two early builds, cash in on both advantages early, and at a greatly reduced cost.
They are so ridiculously cheap and the passive, while not overpowering, is not bad at all.
Considering the cost and the fact that either of the two items it is built from is generally a core starting buy anyway, I'm really surprised we don't see more of this item.

Another way to think about it.
Cloth/5pot or Boots/3pot are two very different starts.
I can start either way and still end up in the same place.
This means, without changing my build, I have two starting options dependent on enemy team comp/SS/buys.
Usually, this would be divergent.
I really think NT are underrated and that Riot snuck a real gem past everyone with this item.

Maybe it isn't for Diana, but I think it is.

Try it on your favorite Jungler, rush it as fast as you can, and see what new options you have in the early game. Diversity of options combined with informed choices will lead to success more often. If you really want to be OP rush it on Shyvana, and THEN tell me it isn't worth it.

I think you need to be more creative with Clairvoyance.
I used to think the same thing as you, that it was useless past the early game.

Try this, just a little experiment.
Take a random summoner spell every game.
Learning to use what you get instead of picking what you want leads to divergent and creative use of gameplay mechanics. Look at ARAM. I promise you, ARAM makes you a better player, because you gain a fuller picture of what a champion is capable of.
Summoner spells are no different.
I think you will find that you rely on flash far more than you should, and that it hinders you more than it helps, even if it does prevent a death.
Look at my above post.
If you could have avoided the death without flash, why are you using it?
Shouldn't you want to play better?
But I digress, I really don't want to repeat myself.

I think you missed that the order items are presented are the order they should be built.
Progression is a theme throughout this build, and you can't move things around to much without that falling apart, UNLESS you understand how it works. But that requires a firm grasp on fundamentals, which is why Moonflair is built.
Believe it or not, when it is built in the proper order and assuming there has not been a catastrophic failure with another function of the build, Moonflair is an optimized choice.
It is very situational, I'll give you that, but a lot of the most powerful things in league are situational. The goal is to create the situation in which it IS useful.

Finally, concerning Athene's.

Just try it.
I'm tired of explaining and justifying my build.
If you try it, it makes sense.

However, Thank You
Thank You Very Much for your feedback, I will try and clean it up a little to be more understandable.

EDIT! I think I need to find a way to include this in the guide.
Flash is only about ~1/3rd as effective on Diana as it is on other champs.
The reasoning goes like this.
Flash is used to close a gap and get a kill.
Flash is used to create a gap and negate a kill.
Flash is used to counter Flash.
The other reasons for it's use are a minority and I will ignore them in this formula, however I recognize that they exist and are a minority.

This is called sample space.
Flash is used to close a gap and get a kill. Not as useful on Diana consider her ult and how it works.
Flash is used to create a gap and negate a kill. Useful on Diana, no argument there.
Flash is used to counter Flash. Again, not as useful because of her ult.

There are some very rough assumptions with this logic, but I think it is sound.
Diana is a Flash counter innately. She does not need it, nor is it very effective against her.
It is likely that a BETTER pick exists.

Alright, the guide got thrashed pretty hard so first things first I would suggest you go to Edit your guide and on the right side of the screen where you publish it check the box that says require comment to vote. This will keep most people from automatically downvoting it without a reason.

Onto the guide itself. Just so you know I have no played Diana but I am familiar with her skillset and a fairly experienced player. Starting from the top down...

1. Summoner Spells. Smite of course, for jungling. The Clairvoyance is what stumps me. I already read your comments and the reasons you took it, but don't you think there are much more beneficial spells that will help you with surviving or ganking? Flash comes to mind because everyone and their mother uses it, but Exhaust and Ghost are just as good. Clairvoyance is rarely used in the current scene, even on supports where Exhaust can give their AD carry a huge advantage in a fight. Also CV loses it's usefulness past about 15 minutes. By mid-game you should have the objectives warded and a fairly good idea of where the enemy will be at most times.

2. Runes. Marks, check. Seals, check. Quints, check. Glyphs...? I could see the usefulness in Greater Glyph of Scaling Ability Power because she scales with her AP and she won't need a huge amount of it for early game. But the 2 Greater Glyph of Magic Penetration...? 1 Magic Pen won't give you much more advantage than you already have in your Marks. Just go all Glyphs of Force would be my suggestion.

3a. Ninja Tabi. Understandable for early to mid AP junglers that can't benefit from a Wriggle's Lantern, but I would swap them out for Mercury's Treads before the first team fight occurs. You have a lot of mobility but any CC / AP nukes and you won't be in the fight for very long.
3b. kage's lucky pick. Great item, especially to grab early for it's gold/time passive. And it will incorporate into your DFG, I agree with this item.
3c. Athene's Unholy Grail I like where you were going with the idea but it's more suitable for a mid lane champ who's going to need those stats. I'm not saying don't buy it, but it's very cliche.
3d. Lich Bane is a great item to get but you simply can't rush it. Especially if you spend all your time getting Athene's Unholy Grail. I'd say grab the Sheen after your Kage's and boots of your choice.
3e. Haunting Guise it's a good item and gives some great stats for it's price. But you build it so late that you'd be much better off with a Void Staff. It would be a good first/second item though.
3f. Moonflair Spellblade And this is why I wanted you to grab Mercury's Treads. It's expensive for the stats it gives and it has relatively poor stats if the game drags to 40+ mins. A Sheen for nearly the same price would give you the same impact in damage output as well as put you closer to your core build of Lich Bane.

4. Over all it's an okay build, I'll try it out when Diana is free. Just a few sections that don't quite make sense to me. A lot of items you have could be switched out for something much more efficient, like grabbing Mercury's Treads for the CC reduction and boots, and a Zhonya's Hourglass for the armor and AP, instead of Ninja Tabi + Moonflair Spellblade.

Didn't help at all.

OMG CV=Troll is an assumed response.
Completely automatic.
You didn't even think about the Pro's to taking CV, and the detractors are just as assumed.
A Support is going to use it defensively by nature, a Jungler is going to be far more aggressive with it. Take a minute to think about all the things YOU need to know to get a kill. Doing the damage is only one of the final steps. Before you get there, you have to find and pick a target, move into position, communicate to your team what is about to happen. CV can help with a lot of this. Ask yourself, Am I using Flash to negate a ROFLStomp situation? Why were you in that situation to begin with? Could you have played better and NOT needed to rely on Flash?
If you can, I submit this.
Why are you using it?
Even a SS that offers marginal added utility is still BETTER than if you weren't using Flash as a crutch.

I'm not saying it doesn't have its uses, nor is it bad.
But as a crutch to negate poor play and mistakes, it only hinders you from getting better.
If the play was not poor or the mistakes were not made, not only would you be a better player, but you also would not need Flash.

If these aren't good enough reasons for you to feel that CV is a decent pick for you, then I think you should use Flash.
If you had read the guide you would already know that.
The answers to your questions are provided.

As far as Ninja Tabi I explained my reasons.

And no, I do not want MAX DAMAGE!
I want acceptable damage and decent defense, which beats out glass cannon every time.

Haunting Guise is completed in its specific slot because it is a complimentary item.
On its own, it is fairly lackluster. I build two major AP items before I get HG, again having to do with the whole acceptable damage concept.

On one hand you tell me to build more damage and then in the next breath tell me to build less.

This is the kind of nonsense that is really frustrating.

I really do feel that people aren't thinking about what they are doing or WHY.
I want to help correct this, as it will improve play on all levels.

Edit: What WOULD help is pointing me to how you missed these conclusions in my guide.
If I didn't make it clear I will fix it.

OK some quick feedback, 1. CV=you will get trolled I suggest you change also flash is better for making the plays and saving your own ***, if you want cv ask the support. 2. why ninja tabi over CDR boots or Sorcs, so what cheap t2 boots that won't help your damage...your an assassin you want MAX DAMAGE! 3. haunting guise is an early game item for pushing an early advantage...you will have completed 2+ items b4 getting this by that time its mid-late game why not just get void staff? 4. No I haven't tried your build for 2 reasons 1, atm I can't go on league due to comp probs and 2 I don't own diana if I did I woulda tried it but, regardless what I said above is some helpful suggestions that you might want to explain better/properly/at all.

Edit: hope this helps.