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.
Masteries: Utility for CD Reduction (21 pts), rest in Offense to improve your magic penetration.
Runes: Marks and Glyphs to improve your ap damage and your cdr, seals to give you a chance to live.
Items: Sorcerer's cause it's an ap build=) LB to make ur autoattack stronger, the rest is for cdr and some autoheal, Nashor's Tooth is a good item too.
Skills: 2-shiv as first to try the first blood, deceive for 2nd to give you an help to run away from mortal combats and to help in ganks. Improve 2-shiv as first when you can (remember is a cdr build so you can almost spam it) and deceive when you can't. Leave JIB as last one. Of course 6-11-16 Ulti.