Hi this is my irelia guide. irelia is a verry strong solo lane semi tank champion, she's verry strong both laning phase and late game. She can easy take the solo lane in top if your team got a jungler. and shes a verry good farmer.

I pick
armor penetration marks
Armor seal
magic resist glyph
and moment speed quintess

I pick my marks to get that extra damage on heavy armor champions lika Jarvan or garen.
armor seal and magic resist glyph because the extra durability.
i Pick moment speed quintess because irelia has a fast base moment and if u get that 4.5% extra u can escape easier from gank by maybe their jungler or the mid player.

My masteries is 0/9/21 because from runes and and dorans shield u already got the health and resist u need early game, in my opinion its more inportat with some mana regen per 5, moment and more cdr.

I start ourt with doran's shield to get that extra durability early on.
First time i go b i buy boot's of speed and Phage