Don't hate me, but Kayle jg
Okay fellow Board-readers, I have a proposition for you. In this tank meta, where almost every game has 1-3 tanks (usually 2-3), the ability to kill them is a must. As they grow tougher to kill, the ability to shred the defenses off of a tank can be extremely beneficial to your team. Thus: 
! The ability to shred off 15% of someone's MR is nice, as your team benefits too, whereas Magic Pen just benefits one person. Now, to get full advantages, another AP carry is needed, so Kayle mid becomes less ideal. Kayle top is just lacking as well. This leaves jungle. Running some AS, a little AP, and some Armor, you rush to gank at lv 4 and rush a devourer->boots->Nashors_>Runaans and farm that devourer. In no time, boom. You're hittin like a bus, with 53 devourer stacks, 2.18 AS and a heal/MS buff and an invincibility buff. Their carry getting fed from the back lines? Get around to the back and get the jump on them. Q->E->W->R (using W and R as needed) makes Kayle hit hard, fast, and with minimal fatalities should you keep warded up. What do you guys think?
first, then 
and a 
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if i end up needing to carry. For AD Kayle, you're probably good, but i'd highly advise a little hybridization. My diamond friend gave me this idea and it seems to work well against most team comps (tanky cant kill you and assassins burst you low and you heal up while ulting) and getting a 
3rd or 4th. Your tanky last items are great though. Of course, swapping randuins for Banshees as needed. Like i said, it depends on the enemy team and how fed you get. My personal favorite Kayle build is farming goddess jg Kayle with 
or 
, then 