Warning: This is my very first Guide. I might edit it. So sorry If it's not the best yet. Have Fun with it! :)
Aintnofrankinthisone.

I've never seen my Kayle build before in game. They always went for AP or something. I recommended it to some people I played with and they did incredibly well with it so I decided to make this guide.

ALWAYS USE YOUR E ABILITY. NEVER EVER THINK ABOUT ATTACKING WITH YOUR NORMAL ATTACK!

Farm, stay back and try to hurt your enemy first, to keep him quiet! If you got Runaan's Hurricane you almost last hit every minion. So to get Runaan's Hurricane real quick you should try to slow your enemy, attack and kill him. It can work. For some champions. Especially champs with low early game hp like Lux or Zyra.

Team Work will be the key for this build. Communicate with your team. When you attack a crowd of enemy champs in the late game, try to stay alive as long as you can but play aggressive. You will deal sick amounts of damage, because you will hit many of them at a time because of Runaan's Hurricane.

Try to get 2 or more champs at a time in a place. Veigar or Jarvan IV are great to keep them for some (deadly) seconds in place for you to attack them.

Through 'Teleport' you can destroy turrets alone and help your team mates whenever needed and 'rescue' your turrets whenever too much minions come to it.

Running into a bunch of enemy's and screaming on ts "I'm lyk Tryndamere madaf@c§kar" isn't the best idea. I did. And died.

So Underrated

But in fact it is true. You are invincible, just like Tryndamere > not 5 but almost 3 seconds.

Use your R ability wisely. Sometimes it is better to save yourself and kill some enemy champs instead of saving your hurt friend. Who would've been dead anyway.

Your E ability give's you combined with Runaan's Hurricane that sick attack power. Always use your E Ability to start a fight. If you want a kill, get in range, then use your E Ability > sometimes they think they can get away but BOOM there it is: "OMG RANGE ATTACKS!! >:O"

BE YOUR OWN CARRY/ Kayle is underrated!

Yes we (Kayle players) can!

Steps to be your own carry:

1 Start a fight with normal attack
If your enemy encounters you press E then Q.
Then W to heal yourself.
If the enemy is attacking you still and your health get critical: R on yourself
If he now tries to run: Q again, slow him.
Finished!

Most players will gather in fights, because they think they are awesome or something (Greetings to Kata, Akali & Darius)

Level 1

Of course, you should concentrate on farming.

Level 2

If you got hurt skill your W ability, if not skill Q. Try to harm the enemy champion as often as you can. A good trick is to attack minions he stands by. Your Fire sword will harm him anyway. If you want to startle your enemy attack him directly (of course)

Level 3

Attack him if you can. Push as far as you can. Your goal should be to force him to leave the lane or at least to make him use all his potions.

Level 4

Gank > If you weren't successful with forcing him to leave. Stay & farm > If you were successful with forcing him to leave!

Level 5

Ask somebody to gank > best choices: Shaco, Evelynn, Tryndamere

Level 6

At Level 6 you can risk your life. Getting killed or not. You decide. Attack your opponent openly and wild. Hopeful you can harm him, ulti on yourself and finish him.
Sometimes you already have Runaan's Hurricane at Level 6 > already got 2 early game kills > You should get it this time again!

In team fights I can also tank or support.

I just can't do both at a time. This is a waste of energy and you will have to pay the ultimate price: death. (haha >:D)

Pro:

[*] Attack Speed
[*] Critical damage
[*] Mobility
[*] R Ability > Ultimate Armor
[*] E Ability > Hybrid

Cons:

[*] "Low" Hp
[*] Problems with assassins or champions with muting abilities
[*] Should get a sidekick?
[*] Easily to (successful) gank without her ulti

The Key to Awesome

Yes now you may think I'm crazy. But no, I'm not.
Many players recommend champions like Kata as lane partners but I'm not going to talk about that.

I want to focuse now on Evelynn. Really:
Team up with Evelynn for getting many early game kills and have a super strong Partner.

6 Reasons why Evelynn is the best Partner for this Kayle build:

1: She deals the magic damage. (There is no KS > 'all for the team!')
2: You can support her when she is getting a kill while in range of an enemy turret (heal her!)
3: You can deal the physical damage. (There is no KS > 'all for the team!')
4: You can save her in the late game 5v5 fights: R on her, not on you!
5: You can tank for her in the late game team fights: R on you, not on her!
6: You can make her even FASTER: W on her!

Kayle rocks! Somehow playing this build is trolling. I hope you are happy with my guide! Good luck and have fun! :)

Yes and get good team mates. I have to tell you over and over again. You will do a lot of "KS" not on purpose; so just make clear its 'all for the team' ;) :)

PEEEACE