Irelia
Perfection of Form
Lane harassment and consistent damage output.
Gain stacks of adaptive force when attacking enemy champions. After reaching 12 stacks, heal for a portion of damage you deal to champions.
Takedowns restore 5% of your missing health and grant an additional 20 gold.
Takedowns on enemies grant permanent Attack Speed.
Deal more damage to low health enemy champions.
After taking damage from an enemy champion, the next 3 spells or attacks you receive from them deal 30-60 (based on level) less damage.
Duration: 1.5s
Cooldown: 55s
Gain permanent max health when minions or monsters die near you.
Offense
+5 AD or 9 AP
-
Flex
+5 AD or 9 AP
Defense
+6 Armor or 8 MR (match-up)
Why Conqueror
Conqueror on Irelia allows you to use your massive mobility to take extended trades/fights and dish out massive amounts of true damage.
Why Triumph
Triumph is an all-around solid rune choice. In 2v2s and 2v1s, the extra healing can be enough to grant you the **ability to sustain and move on** to the next target.
Why Legend: Alacrity
The majority of Irelia's damage comes in the form of her Auto Attacks thanks to her [W]. Alacrity grants you the opportunity for an additional 1-2 autos when the enemy is stunned with [E]. If the enemy team has a ton of CC, Legend: Tenacity may be a better choice.
Why Coup de Grace
Coup De Grace allows Irelia to continue **chipping away** at her target until their life bar is fully depleted. If you're planning to duel to the death a lot, Last Stand can be a vital option to hold your ground.
WhyBone Plating
Bone Plating grants you early game damage mitigation helping you to sustain into an effective recall for Sheen.
WhyOvergrowth
Overgrowth's bonus HP makes you scale into a mid-game monster able to duel with anyone after your 2 item power-spike.