Hello! My name is Maciek and this is my first build/tutorial. How i play Orianna, but first MY ENGLISH ! I learn english in school and i go to extra classes but i can't gramma so sorry! Why Orianna? Beacuase i love this champ ,when Ocelote (SKG) showed on ! She can be amazing when good playing!

Why i choose this runes? Greater Mark of Magic Penetration - it can give nice magic pene. for start :)
Greater Seal of Regeneration - when u want to farm using skills , u need some regen for mana , i take per lvl because i dnt need so much mana regen on first lvl but it will still grow,if u dnt have blue buff ur unuselles with farming and fighting on early game.
Greater Glyph of Ability Power - i think ap per lvl is not sucessfull cause u have some ap on start and if u use this rune u have more ap than with per lvl runes.
Greater Quintessence of Ability Power - gives u really much and nice ap :)

Mastery Tree ! I think that every1 can have some other mastery tree some def , utility or attack i think that every1 can play with his tree.

Okey for today it's everything that i can say.
Summary :
-Pros/Cons
-Farming
-Items
-Something about skills