Kassadin Buff

Okay so before this potentially gets downvoted just because Kassadin and buff are being used in same sentence, please note that this is just something I have been putting some thought into since the malz rework. I'm not asking for a return back to the 98% + ban rate days, but rather something to put kass back on the map. So please do at least consider this.

Now, thought for Kassadin buff, why not give him magic shield like his current one, but make it a passive on his Q, one that works similar to malz passive but only works as a magic shield and nothing else, no immunity to cc or reduced damage. Ranking up the skill can either decreases cooldown needed for shield to come back up or actually increase the shield strength. As examples the rank 1 Q gives 150 total shield vs rank 5 Q giving 550 or total mana can determine its total strength with its own scalings being thrown in, as an example a .3 scaling so that 2k mana gives you a 600 point shield therefore allowing kass to retain that late game monster status while only having a bit of an easier time early. Cooldown on shield can also be made just like malz, as long as kass hasn't taken any damage in x amount of seconds it will just passively refresh. Also please note that the examples are just random numbers tossed out, actually balancing can be made by those who know better. And for those that might not read the first time, this shield is strictly for blocking magic damage, no immunity to cc or reduced damage or any other effects.

My thoughts on this being that with such a change Kass can really step out as the anti-mage he is supposed to be, first being able to withstand his fellow mages, then later becoming a terror to those who would think to wield magic against him while still retaining traditional weaknesses against pesky assassins like zed and talon.