Not Updated For Current Season
Irelia is, from my point of view a hybrid. The playstyle is very much up to the player.
I have only picked 4 items because u will rarely get more cash than this. If u need more go for either a zhonya's ring, if the ennemy team has alot of armor or a Madred's bloodrazor if they got health. For magic pen get a Void staff.
Summoner spells I would always pick Flash, but the other spell could be swiched out for either: Clarity for more mana (this should not be needed) or ignite, just to get that last bar of Hp.