Hi all, im EpicReanimate, i saw a day a guide about Kayle playing this way but he was not very complete so Ive got the idea to complete it like i love to play her, I hope you will love her like that too ! :)
Kayle is a based support for most of people but don't forget that she do lots of heavy domage , and this, quickly. In this guide i will explain you why i decide to play her like that and my choice of all Item, Runes, Masteries and etc ! Hope you enjoy ! [...]

For the runes I use what ive think the best for all my test.
Mark:I chose critical chance because this guide is basing on critical, speed attack, and with Tiamat and Righteous Fury it gave a lots of aoe crit domages!
Seal:I chose armor because like ive said in the Introduction, Kayle is pretty low on early game on the defense, Armor and Magic resist too.
Glyph:I chose magic resist per lvl beacause of the good score tsey all gave at the end and, like I have said before, Kayle is low on defense.

For the masteries I have gave what I playing with but, i guess it have a lots of masteries that can be good with a Critiamat Kayle, So I will explain by the way the point i chose but fell free to change it like you love to play !

At the top of the page i Have show you an item list, that what abitually i take to play, but depend of the opposing team, some item may change, depend of you and your team mate too! For me, at each begining of games I begins with Boots and Health Potionx3 or Health Potionx2 and Mana Potionx1, depending of if you need farm a lots, or assault enemi and push lane.
Generally, when I back to base the first time I buy my Berserker's Greaves , if I got gold to take something else, depending of if I got kills/assist, I take Avarice Blade in second, or if you don't got enough money just take Brawler's Gloves.
Now you can begins to assault more and more, but don't forget to farm the most possible when your team mate are away or not in danger!
After that fell free to back in base each time you got enough gold to upgrade your items!
After finishing your Avarice Blade focus on a Pickaxe and if you can farm until you can buy yourFirst Tiamat.
Once your Tiamat buy, try to got some kills/assist or farm in forest or alone in a lane to rush your's B. F. Sword.
Once your Sword buy, you got 2 possibility, the First: Finish your's Infinity Edge / or / Second: Begins your Phantom Dancer with a Zeal.
At this stage, if can't farm on lane, in jungle, or your team is disadvantage face of the opposing team, you can go in protection item, or somathing like that, but be careful, with half of Attack item and half of Defense item, Kayle loose a lots of her potential, so if you got tank in your team, do not buy some defense item or just a Guardian Angel instead of your Second Tiamat or your Youmuu's Ghostblade.

Like you can see inFirst pick your "e", you need to get it to lvl 5 the fast as you can, its your primary attack to your dps.
After, some will said that is better Reckoning, and othe will said Divine Blessing it all depend on how you like to play Kayle, and how your team goes in team fight, Divine Blessing can save life and its very good because you gain movement speed and a heal too.
Its your choice to up te Second spell, like other champions lvl 6/11/16 you take you ult Intervention.
Reckoning help on the gank or if your assault, it slow and at the end doing good heavy domage.

The primary i play with :

Good also :

To avoid :

The other can be play, it depend of if you realy think they are better than then I recommend you.
- Flash are very good with Kayle, so don't be afraid to flash to kill or to run away. Exhaust are good in a fight, 1v1 like 5v5, Exhaust the most powerfull AD opposing champion, or iv 1v1 your can Exhaust the ennemy champion to get the less domage of if he is running away, help you to get early kills.
- Cleanse is good with Kayle too, if you get focus and stunt or over control use it to run away and support your allies after with Intervention and Divine Blessing. Clarity, you can use it if you don't got mana regen's runes or if you don't take any item or Mana Potion in early game, but its not the best summonner spell to take, because while playing Kayle, you need to farm the Golem Blue Buff as much possible you can. Ignite is good in early game to get kills, with your Righteous Fury and your Ignite on the same champion, you can kill it easily and if your Righteous Fury finish and you have not kill it juste Ignite to finish it.
- Heal Ghost I said their not good because your already heal and get a movement bonus with your's Divine Blessing, so I think the other summonner spell are better!

My guide is not finish yet, i will try the soon possible to finish it! Thx to rate and comment !