If you really want Ludens to stay THE must-have first item for 90% of the mages after this rework..
...then please, remove its ability to trigger every ability-hit effects on its proc. Making so that you can rush this item to get some insane early burst while solving almost every mana issues that you might have is already very very good. But I believe that proccing comet/grievous/liandry's on a dude in lane who got hit by a purple slush droplet is a little too much. Like, even if you dodge a skillshot, if the minion next to you gets hit you are still eating up an amount of damage who is not ok at all in just laning phase
is the more common