Malzahar is an easy-to-play champion that pressures opponents with strong wave clear and area-of-effect damage over time.
In the mid-late game, with items like Liandry's and Rylai's, Malzahar's voidlings and ultimate combos deal high damage and significantly increase his carry potential.
When facing Malzahar, Quicksilver Sash is essential. Exploit his weak early game or counter-pick with champions like Twisted Fate.