Hey All, this is my first build.This is one of the build routes possible, focusing on more of a crit Kayle, I personally prefer this for ranked because it's easier to kill since you can do tons of damage.
I wish you all the best!

Pros:
-Very big crits
-Awesome Support(inv,heal,speed,high damage)
-Very fast when using heal on self
-Counters melee top laners (olaf, singed, nasus, darius, etc)
*if you lose a game as kayle the highest probability is that either you lost your lane or somehow didn't do your job, kayle's efficiency is extremely skill based*
Cons:
- Needs solid farm (at least 60 by 11 mins)
- Top's that have hard gap closers or tops that can outsustain kayle often beat her (countered by irelia, shen etc)

I take full crit runes because you will do tons of damage.

I use flash for escaping
And exhaust to catch the enemy