Meet battlemages (AKA control mages), the champions left to rot if Riot doesn't want them in LCS
Are you a mage?
Are you designed for being able to stay in a teamfight longer than the 3 seconds average of the other mages?
Do you barely have some synergy with a keystone or none at all?
If you do happen to have said synergy, did that keystone get gutted because of it?
Are you forced to build pure mana for the first 20 minutes since the mana nerf apocalypse from last year?
Did you ever get picked in some pro championship as an emerging or off-meta pick just to get stomped by the nerf hammer a week later?
Do you have to give up any hopes of winning lane when the opponent locks-in an assassin, even if you are supposed to fare well against them?
Did you get any slight or major rework so people played you for 2 weeks, then got forgotten for months about you until the meta somewhat shifts for you?
If you answered positive to most of these, then I'm sorry congratulations, you are a battle mage!!
Now, the next two questions will have an huge impact on your viability, good luck:
1- Does Riot have some unknown bias or favoritism for you? 2- Are you able to play top?
If you answered yes to one or both of these questions, then congratulations again! You are meta and you'll stay this way until your answer for these questions become negative! If, on the contrary, you answered no, I'm sorry (I really am) but you'll need to wait another major rework in either your kit or any field concerning mages until you MIGHT be able to do something for some weeks in the meta.
playing as the Catcher/Control-mage subclass, and sacrificing significant damage from runes by taking a full Resolve page to get Aftershock, is often considered 'abuse' by some players.
could be made attractive for short/medium ranged battle mages again. It was actually good for playstyle variety, though it was probably a little too generically powerful at the time it was originally nerfed since it was being picked by the likes of Cassiopeia. It seems like a middle ground could be found where certain champions like 
would consider picking it up when they need MR and mana.
Well hello there.
feels less tanky than a cannon minion now. I don't knpow how he is meant to be a battle mage when all non melees and some of the melees have all more range, damage and tankiness than him.
instead of being able to retaliate. Landing your full rotation on them without a mana item is more harmful to you unless youre running 
against a high kill pressure lane to begin with. Midlane feels completely dogshit to play now for half the cast because of it