I feel like...
Adaptive Helm shouldn't reduce damage from only mages, i can't really think of that many mages who spam an ability often enough to warrant the item not to mention most if not all of their abilities that can be spammed are skillshots anyway, most mages have pretty much exactly a 4 second cooldown on their most used spell at full CDR. If not 4 seconds it's usually between 3-6 seconds with the vast majority being 6 seconds, meaning adaptive helm won't help against it.
But that's only half my point, there are SEVERAL AD champions in the game that spam a single ability more often than a mage, Yasuo's Q being available every second for example, caitlynn's headshot every single auto is another example. Many ADC's have plenty of spamable abilities and ADC's are extremely strong again, it seems to always happen after you update another class, how come you have to buff every ADC somehow or give them compensation when something else get's buffed or nerfed, it's really annoying. After the Mage update ADC's became busted, after the Assassin update, ADC's became busted, now after the tank update guess what, ADC's are busted. Stop compensating bot lane just because the other people in the game need buffs, ADC's don't need to be buffed every 2 patches to stay relevant, what are we gonna do just stop playing them? News flash we freaking can't cause marksmen are a necessity bot lane, very few other champions can be successful down there so 90% if not all games have one marksmen in them or more!
I really would like for tanks to have an item that protected them from crit's, we lost omen's passive during the tank update(for fuck all reason i don't know.) and it's starting show on every tank that isn't strong right now and news flash only 2 are strong.