A lot of you may be thinking why on Earth would anyone play AD Ahri and that is a valid question. Think about what makes adc's balanced: no or limited access to mobility spells and hard CC. Imagine if Ezreal could stun you for 2 seconds, or if Ashe had 3 dashes, that would be broken! Well, thats AD Ahri. While traditional adc's kits scale better into the late game since they have AD ratios, Ahri packs a massive punch in the mid game while still being active in the early game. The build takes advantage of Ahri's extremely high mobility with Fox-Fire and Spirit Rush to kite out opponents and make picks with Charm.

Lethal Tempo compensates for Ahri's medium auto attack range. The added attack speed is also extremely useful for kiting your opponents and adds dps. Together with Ahri's innate mobility it turns her into what every adc wishes they were.

With Ahri's new passive Essence Theft she now heals after every takedown, pair this with Triumph and as long as you're getting kills you have an insane amount of sustain.

You might think Legend: Alacrity is the better option, but since you aren't building Immortal Shieldbow the added lifesteal is very helpful.

Coup de Grace helps quickly eliminate key targets and is better in most cases. Consider taking Cut Down instead if the enemy team has a lot of health stacking champions.

Most Ahri players would run Cheap Shot her but I consider Taste of Blood to be a lot better, the sustain it provides in lane is especially important for the AD build since you will be barely using Orb of Deception and therefore your passive healing will stack slower.

Ultimate Hunter is one of the most important runes for Ahri in any build. Ahri's kit is built around her ultimate which allows her to make aggressive picks, kite her enemies and dodge skillshots as well as run away from danger. Any other hunter rune is miles worse and you should use it every game.