AD Malzahar
I don't think this should really be a "Thing" or at least as strong as it is now ,I mean this is Malz who is possibly one of the strongest mages when played right. As it stands this is possible solely because of his voidling who has a 1:1 scaling on bonus AD but whats worse is after 7 seconds it gets an extra 50% on top of that and then shortly after that a 100% Attack speed boost. Now if the voidlings attacking was dependent on Malz being close It wouldn't be an issue,however with Visions he is able to send the Voidlings after the target while he is safely out of range,this makes him near impossible to fight 1v1 or even 2v1 in lane due to his AoE and Silence restricting damage output so much.
As far as a Fix goes,the ratio needs to be dropped,how far I don't know but it does need to come at a much higher cost then less damage in a CC heavy kit meant to normally lock down mages.
and some high damage items can make your voidlings have way more ad than anyone on either team, but you'll be super squishy and won't have the mana necessary to get more than 1 voidling out until later in the game and you'll be almost useless without the voidlings out