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.
Thats the build i played with Malzahar, THe key item is the will of ancients because of the spell vamp. as soon as you get that with clarity, you can stay around fights forever getting kills once in a while, but most importantly, if you dont get kills, when peopel start running out of fights fro myou, even if you have low health you can regenerate with malefic vision on minions and push turrets very easily for the win. Also, if you get ganked by an annoying character such as xin zhao and lose half your life, you can silence, voide malefic vision him finished by a nether grasp, if he survives, he wil have low health and you will be full because of your spell vamp and al you have left to do is another malefic vision which should have refreshed and he will be done.