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.
The Idea behind this Hybrid Viegar build is the fact that Almost like Kayle's Passive his Baleful strike allows him to stack endless AP when last hitting. Most people will laugh when they see you building this, but it works. His damage crit and speed ratios stack quickly.
Skill combo. Same as you normally would with AP Viegar but with a twist, Between each spell keep auto shooting for high damage. Bye the time you reach end game in a turtle you will have about 350 AP +300 AD with speed and crit you are now an assassin Powerhouse. People wont expect a Viegar with Auto shot power, so when a noob attacks you when you run out of mana, you can lol own them. While leave them saying WTF!
Viegar is not the Tiny Master of Evil but the Tiny Master of Hybrid.