Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Very, very simple Attack Damage build.
Irelia has alot of burst damage with low cooldowns and a GREAT chaser because of her base movement speed giving her 400 after berskerkers greaves and skills to slow and such.
Start off with brawlers gloves and whatever potions you want for some extra crit stacked with the crit runes you have to help you. If you didnt get the crit runes get a dagger, boots, or long sword.
Use your youmuu's ghostblade to chase and run away if needed.
Your ultimate heals you for 20% of the damage dealt, use this in the direction with the most champion or minions to heal yourself.
Here are some of my scores, I know i lost a game its the score that im trying to show.