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.
Malzahar AP Build
So this is just a standard AP build for Malzahar, He's an interesting champ but seems like it takes a bit of skill to master, I've only played him about 20 games but i think i have a handle on it.
if you guys would like a more in depth explanation let me know and ill put it up just its 6AM now and i need Sleep :)