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.
This build is for ganking and middle lane. Once you reach level 6 get your ultimate and use null zone and Nether Grasp while ganking. For beginner items get boots then upgrade to ninja boots. The dodge will help with survival. Eventually, if you do good enough ganking and get plenty of kills. Malzahar will have enough dmg dps and ap to own anyone.
Pros - Malzahar null zone will always strike fear to opponents, good for escaping
Pros - Increased speed allows easy ganking
Pros - Enough Hp to tank and slow enemies so your teammates can help in dealing dmg
Cons - If there is any stunners or silencer like Garen they can stop your ultimate
Cons - Low Hp and Movespeed
Cons - Usually won't out dps most champions, but can usually do enough dmg to make one run