I see your point, about the items. They are optional too, but i just prefer Guardian Angle, beacause sometime in a teamfight, you jump in and before you can even press any letter, you are just slain in a sec because everybody was focussing you. Than I really like that Guardian Angle so I can just flash out inmediately when I come to life again.

I also tried Hextech Gunblade many times, but I just liked Lich Bane more. I don't realy need LS and SV because of my meditate. and after I bought my Rabon's Deathcap, Lich Bane is just so OP. I have 500+ AP, so when I Alpha Strike, it does about 600 damage, next attack does about 600 damage, if i use me E or R 2 sec later, i do another 600 damage. So I prefer Lich Bane, but Hextech Gunblade is indeed optianal.

With the boots, I just like to start off with CD boots. But late came I should probably change them indeed for an other pair, depending on the game.

Furthermore, I'll upload some video's where I can show you how this build works in practice ;)

Ty for your reply again!!!

Well I rethought it after while and I think it can be effective and hybrid, but not most potential build. First of all I would change Guardian Angel to Zhonya's. It give armor like Guardian angel. It give you some extra AP and it give you enough time to get ignored in teamfights, if enemy team don't want lose it. Also Zhonya is easy to pop up straight when your meditate will be interupted or when it end, if enemy team is still waiting and your team is coming.

Also to give you sustainability. I would make Hextech Gunblade to provide AD,AP,LS and SV.
It has too a potential activation skill. It do 300 additional dmg and 50% slow is really nice, if your ulti is on cd or you don't want pop it up yet or in that situation.

I would change this with Lich Bane. Yes I know Lich bane = OP item for high AP, but it can provide you one nuke hit in fight since you will be focused. With Gunblade you can survive longer in fights it give you 300 nuke with probably is just 100-250 less than you will do with bane lich and Gunblade give nice slow.

SO enemy have high burst and weak champions in their team take Lich Bane, but when they have more sustain team use Gunblade.

I haven't tested this build, because lack of time, but I belive you get enough CD with Nashor's, Masteries and you ulti's passive. So I would change you boots to mercury's to provide MR what you miss without Guardian angel and give you useful tenacity or Sorcerer's for peneration or even Berserker's to provide additional AS, if you want.

As is said in my guide, you go AP in laning face, becuase that works the best being mid. Even tough your damage is quite low, you still do loads of damage due to your attack speed. Eventually, when you reach level 18, your AD will be arround 216 so with 1.600+ attack speed, I consider it as Hybrid.

But what items should you change than?

Thanks for your reply BTW!

Hi, I prefer AD Yi, but I think AP Yi is fun to play and effetive at some points, so Hybrid Yi would probably be double fun..... but your build lack some basic needs of hybrid.

I don't see any difference with AP Yi and your hybrid, except that you have less AP and 0 penetration. First of all you lack of AD dmg, since your only item which grand AD is Rageblade, which isn't even effective AD source and other reason why you lack of dmg in early and mid game is that you lvl your E last.

Your build give only AS for Yi and he already have it well with ulti.....
You have no on hit damage effect items, except Lich Bane and it doesn't aid you anyway more as hybrid than as AP carry.

I'm down voting this, because it give nothing really different on basic AP Yi and this build ain't a hybrid for sure. It just lower your damage and something life saving items like Zhonya's and Void staff, if enemies stack MR.

Last, but not least you can't assume you last to so said full build/late game or be sure your enemies doesn't destroy you or your team, since you get potential power in team fights are after lvls 16-18.

Your guide was okay as a guide, but it miss some BB coding and game play tips section, seems to be rushed and not well organized.