Summoner spells as I have updated I would recommend Exhaust and Ghost simply because as you know, Malzahar does not have very good escapes. These two spells allow him to be right upfront in the action when need be, but he can also escape quickly.

And yes, you want your pool down where you are going to ult them, this maxes out his damage a lot. With the full build I can take down 90% of the champs out there with that combo. And if they do manage to get away, have your Malefic Visions ready to hit them.

1) What summoner spells are you suggesting?
2) What two spells make up the combo? I'd think W, then ult them on top for max damage?