User blog comment:TakaHann/Gravitatus, the Mage of Vectors/@comment-8506165-20130901101946

Horrendously overpowered atm. I'm not looking at the ult, which is honestly about the only thing that qualifies him as a burst mage - he seems to be all about the utility with his other abilities. So I'm looking at what happens if you put him in botlane as a support. Post-3, he has:

A targeted (!) 450-unit pull with 900 range which then applies his slowing passives and a brief stun (!!) allowing him to cast his E on them for 0.5 seconds suppression (!!!) followed by a stronger slow stacking with his passives (!!!!) and... well, he wouldn't even need his W or ult, really. They're already dead by then unless your ADC's decided to afk or something. Although it just becomes more ridiculous when you add those in.

Cool idea, don't get me wrong - he seems more of a utility mage based around disruption if you ignore the ult, which fits thematically with his lore, but as I say, just too much utility atm. Imagine Blitzcrank if his grab was targeted - although your Q only pulls half as far as Blitz's potentially can, as anyone who's been grabbed by him knows, 450 units is often quite enough, and this guy has enough CC to follow up on it.

Not sure what to think about the ult. Seems like it could be really powerful in lane if you're facing someone that can't interrupt it, but almost impossible to use in a teamfight if they're on the ball, or if you're laning against someone with hard CC. Actually seems kinda balanced because of that imo. At first glance it seemed OP but comparing it to Morde's and considering the limitations you gave it seems to balance out fairly well.