Split push dueling and lane pressure.
Improved attacks and sustained damage
1.5s after damaging a champion gain a large amount of attack speed. Lethal Tempo allows you to temporarily exceed the attack speed limit.
Takedowns restore health and grant bonus gold.
Takedowns on enemies grant permanent Attack Speed.
Deal 7% more damage to low health champions. Gain AD/AP after kills or assists.
Empowered abilities and resource manipulation
Hitting enemy champions with a spell grants maximum mana.
After reaching 250 mana, Manaflow Band restores 1% of your missing mana every 5 seconds.
Gain 10% CDR when you reach level 10. Excess CDR becomes AP or AD, Adaptive.
+9% Attack Speed
+6 AD or 10 AP
+5 Armor or 6 MR (match-up)
Lethal Tempo makes Kayle a late-game dueling powerhouse, able to pump out an insane amount of auto attacks on 3+ items.
Triumph is the best rune choice in this group. The healing on a kill lets you pop [R] when low and come out the other side healthy enough to keep fighting.
More Attack Speed simple means more autos while [E] is up. Solid choice in all situations.
If you're playing into a number of champions will reliable hard CC, Tenacity might be a better option. here.
End your enemies life as quickly as possible, especially squishies.
If playing into a number of big tanks, Cut Down is likely a better option here.
Manaflow Band allows you to trade with your enemy lane opponent and out-sustain them thanks to your ability to sustain mana with your cost mana-cost [W] heal.
Transcendence grants Kayle the mid-game CDR necessary to keep your [E] up at all times. The extra bit of CDR also puts your [R] on a very short cooldown.