Every time i play agains or on one side with Kayle, i hear the oft-mentioned phrase "HERE COME THE PIGEON! " and she ends mainly as a fried pigeon after 4-5 sec. So I decided to make useable build for her. Enjoy it.

Kayle is a fighter support, or atleast RIOT GAMES writes about her. Let see what is realy under her armor.

First, her abilities:
Holy Fervor (passive): Reduce the attacked champions armor and magic res. by 3/stack for 5 sec. (5 stack max) It's a more or less useful passive, isn't in the "OP" category, but not so bad.

Reckoning : Deal magic dmg with 100% AP bonus to the target, an slowing its movement speed by 35% for 4 sec. The slowed target takes +10% dmg from Kayle. This ability is very useful, gives incredible dmg output.

Divine Blessing : Heal a friendly target champion with 35% AP bonus and increases its moovement speed for 2,5 sec. The speed boost is a good effect, but the heal isn't so effective.

Righteous Fury : Kayle has ranged basic attack for 10 sec (400 range), and deals magic dmg with 20% AP bonus and her attack cause splash dmg as well. This ability can makes her a real killing machine. Gives realy fast early and strong mid game. Killing entire minion waves cause fast gold income.

Intervention (ultimate) : Friendly target immune for all dmg for a sew sec. This ulti. give her some free kills and help her to escape.


So, as you can see, Kayle is a midrange mage/fighter, and she isnt support. (Ok, she has heal and shield, but please, what are those near Soraka, Sona or Jana.)
Her abilities are boosted by AP, and her main power is Righteous Fury, so she need basic attack to.
So let see what we ha to bring justice on wing of fury.

I prefer the 21-0-9 mastery version. The most important masteries:
Offensive: - Alacrity, Sorcery, Arcane Knowledge, Archmage, Executioner, Havoc

Utility: - Good Hands, Runic Affinity, Swiftness

The others are to fill up the place.
Teleport/Clarity/Surge works well with her.

I think runes are so clear, in harmony with items and mastery :
Mark: attack speed
seal: mana reg/5sec./lvl
Glyph : mana/lvl
Quint.: attack speed

Let see the most interesting part of the bild: items:
- Malady and Nashor's Tooth : AP, attack speed,cd. reduction and, magic res. reduction and magic dmg on basic attack. In harmony with Rightous Fury, Reconing, Blessing
- Trinity Force: attack/movement speed, AP, AD, HP, mana, and the other effects.
- Berserker's Greaves -> Phantom Dance: movement/attack speed, crit: Rightous Fury
- Hextech Gunblade: AP, AD, Spell vamp., life steal, magic dmg: Rightous fury, normal basic attach, Reconing, Blessing
- Madred's Bloodrazor: AP,armor, magis dmp: normal basic attack,trigger spell vamp.

Surge: Ap and attack speed gives more effectivness to Kayle.
Clarity: preventing you from empty mana bar.
Teleport: Be on the right place in the right time.

Pros:
-Amazing DMG output
-lot of chance to escape
-easy to use
- fast gold and exp. farming

Cons:
-not so tanky, so dont play rambo
-fast kill and farm needs intesive ability use, causing mana burn