First of all, this guide is for "nice guys" because I've been playing kayle with many different builds, so I took the best for this champ, enjoy it ! Kayle is a strong pusher because of her E, your lane is constantly pushed if you don't last hit with normal attacks an without your E, keep it to harass the ennemy and deny your laner

As I said, this guide is good for me, but there are many different gameplays for kayle so you can take a lot of different runes sets (like pure Atk speed, mvmnt speed, offensive or defensive) for Kayle. Just test it yourself ^^.

I generally go on an offensive 21/9/0 for solo top but you also can do some 9/0/21 sustain set or an hybrid "as you want" 9/15/6 but it's weird. Kayle has a lot of dps and quickly dominates because of her "perma-harass" and her range.

I know some would go on a Wit's End or on a malady but as I said it 3times, Kayle has many different ways to be played.

You can go on a Guardian Angel if you are focused but a Phantom Dancer is also good, you can choose to stack the incredible damages with the trinity force + wit's end + malady + Madred's bloodrazor to go on an anti-tank build, a frozen mallet is also viable

Her AP build is strong, don't care about what people say, Kayle is for me the best solo laner after Morgana and Irelia

I max the Q first because that slow is useful for ganks, escapes and the "perma-harass", you can max the E if you find your dps isn't so hard for you but it has a duration and you will spam it if you don't care about your mana (it's a bad idea with kayle)

I think Flash/Ignite are the most viable Summoners because you know their utility, you can also take a ghost, a teleport or even an exhaust to maximize your gank efficience.