I dunno about you but all I see is an item that Malzahar can abuse. Voidlings OP.

Also the spiderlings do magic damage not physical.

If its not on hit then how do I proc it with out using an ability or attacking? In order to proc it you must do physical damage.. which implies that you hit a target with some kind of physical damage either AA or ability. So it is in fact an on(physical)-hit item.

Elise can only deal physical damage by aa and spiderling's aa.

And spiderlings' ad only scale with ap!!

Read the description pls,"physical damage",but not "on-hit and physical spell damage",

Poppy q,Warick r are both on-hit,but not physical damage,and won't apply Cleaver's passive.

and "physical spell damage",spell damage which means it procs spell vamp and Rylai's slow.

Draven's innate,physical damage and not spell damage,and it does apply Cleaver's passive!!