Gain increasing amounts of AD or AP, Adaptive over the course of the game.
Offense
+9% Attack Speed
Flex
+5 AD or 9 AP
Defense
+6 Armor
WhyLethal Tempo
Lethal Tempo on Ashe allows you an early proc with [W] and tons of follow-up auto damage with the massive boost of Attack Speed when paired with [Q].
WhyOverheal
Overheal is an all-around great rune choices on most AD Carries. The shield while small, negates a lot of damage over the course of the game.
WhyLegend: Alacrity
Legend: Alacrity is the go-to on pretty much every AD Carry, especially Ashe who loves to auto as much as possible.
WhyCoup De Grace
Coup De Grace is a great general damage implication across the entirety of the enemy team.
WhyAbsolute Focus
As a backline carry, in teamfights the additional Attack Damage from Absolute Focus will empower your ability for your rapid auto attacks to deal a ton of damage.
WhyGathering Storm
Gathering Storm further empowers your marksman late-game scaling to take over teamfights.