Kayle was the first lol hero I ever played. I have tryed her as support, tank, ad, ap, top, bot, mid lane in hundreds of games. This built is a carry built. You will take kills and you will carry your team to the victory.

The runes are straitforward. We go for a "on-hits effect" built. Your damage will be 1 part physical 2 parts magic endgame but mostly physical early game. So you need runes for both. Hybrid runes are godsent.
Attack speed gives you a boost for jungle at the beggining so does the armor too.

Masteries want to accomplish the same as the runes. Since kayle has a lot of perks built in as speed - tankinesh i go for offensive built.

Items are pure on hit effects. Cheap at the beggining and built up as you get fed. First time back try getting the Razors and the boots.
Second one finish the boots and take the attack speed parts or malady. Generaly focus getting speed parts first. Helps you in jungling - farming faster
Ionic spark is a great aoe - farm - killing tool.
Wits end will help you move at mid game and have some more durability.
Madreds Bloodrazors will shread hp - tanky heroes at mid - endgame.
You can continue built trinity if game goes to far.

If the oponents have have disables you should consinder Merciries Boots since your ulti does not stop the cc.

You beggin with E. This way you farm small camps fast. For the same reason E is your rising priority. Then Q end last speedboost.

As a jungler you will need smite. Second spell is at your will. You dont need flash that much. You are semi bruiser, your w makes you a good kitter and your ulti makes you invincible. You shouldnt run. Only attack.
I recomend ignite or cripple if team hastnt got at least 2.

You start from wolfs.
Have a teamate help you for faster blue engage. Kill blue, levelup.
Now watch it. Heal will save you a lot of pots at level 2 but if you take Q you are able to start ganging. So keep an eye for ganking oportunities.

At lvl 2 go to wraiths and with golems you became level 3. Now check again. Can you gang? If not take red. Again check....
Whe you engadge the moment you appear use heal on you or on your teamates for the speedboost. Q to slow, e to dmg.
Kayle has a very strong burst at the beggining.

Always use your ulti to avoid maximum damage on your team.
Thats probably when the other team focuses you or your carry and NOT when someone runns like hell to save his life.
If you do it at 1% probably you wont change anyhting.
If you do it at 70% before that character getts some serius beating you are a godess.

Kayle is a multiperpuse multiuse character that can change a match. Use her correctly and she is imba.