Teamfight sustain and dueling power.
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.
Excess healing on you becomes a shield.
Takedowns on enemies grant permanent Lifesteal.
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 increasing amounts of AD or AP, Adaptive over the course of the game.
+9% Attack Speed
+6 AD or 10 AP
Lethal Tempo's additional Attack Speed is massive for empowering you to get your feathers out quickly and get as many auto-attacks off as possible during your [W].
Overheal paired with Fleet Footwork is great for absorbing and sustaining lane poke from mage supports. The extra health shield keeps you ready for a fight at any moment.
Bloodline's bonus lifesteal pairs well with the rapid attack speed from Lethal Tempo and Overheal to keep you topped off in lane.
Coup De Grace is an all-around reliable source of damage when looking trying to kill squishy targets with [E].
Manaflow band allows you to trade early and often with [Q] spam harassment to begin your lane dominance early.
Gathering Storm, like on most Marksmen, empowers you to become a late-game powerhouse able to take over teamfights entirely on your own with 4 items.