Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
I want to clarify that is my first guide and I'm not very good in english, so please accept my apology for my writing.
This is a full Ability Power build with a good Magic Penetration and Spell Vamp. But this is a basic way, and you have to adjust your items depending the ennemy.
Under construction, please be patient. ;)