tbh irelia is at the point now where you just rush trinity and merc treads, get either visage or randuin's (depending on whichever lane fed harder), and then get like either botrk if you're ahead or hydra if you need to splitpush or like wit's end of you need the extra mr. then like GA because once lategame comes you are basically gonna just be there to disrupt the enemy backline and they'll do 59863976902 damage and you'll do like -4 so the chance of staying alive is nice.