AP Bruiser Item

Alright, so I'm working on coming up with an item for AP bruisers.

The champions I am looking at: Champions that are ideally more mages than bruisers that have a high potential of abusing an AP Bruiser item:

Making the item melee only would remove , which I think would be a very wise move.

Then, most of these champions lead with a hard CC and have kit-oriented reasons to auto attack frequently. Those who do not:

That leaves , whose hard CC are both difficult to land and cannot be used more than once in a fight usually. This also would include: If we use Hextech Revolver, Fizz and Ekko lose out on Hextech Protobelt

We also have no armor AP items, so that said, I am thinking something along the lines of

From these items, we get a baseline (2950g) :

45 armor 75 AP 200 health 10% CDR UNIQUE PASSIVE – MAGIC BOLT: Damaging an enemy champion with a basic attack shocks them for 50 − 125 (based on level) bonus magic damage. (40 second cooldown, shared with other Hextech items.)

Now we just change up the passive to include the hard CC part and complement on-hits and ultimately we end up with something like:

3100(g) 45 armor 75 AP 200 health 10% CDR UNIQUE PASSIVE - WIND BOLT: Hitting an enemy champion with a stun, taunt, snare, or knock up marks them for 5 seconds. Your basic attacks against marked enemies gain 40% bonus attack speed and deal bonus magic damage on-hit. (40 second cooldown, shared with other Hextech items.)

Thoughts? Concerns? Champions I missed that would break this? Things I didn't think about? Stats suck? Throw it out there.