I´'ve choosen this items because so he can get much armour and magic resist at the same time as much dmg and health. The masteries, i have choosen only on offense because he already got so much magic resist and armour so he got some more help on offense. Anyway like you see extra abillity power, armour penetration, attack dmg life and that stuff. But i have choosen 2 special because in the beginning it is good with extra damage so he got 10 extra damage at turrets and 5 more damage and abillity power when he uses his ignite. I hope you enjoy the build