Still not convinced about this. Looking down the list
Can use Comet just fine.
Prefers Predator.
Phase Rush is great, but Comet is still an option, both because of being a Rylai's builder but also because of Comet's cooldown reduction mechanic.
One of the unlucky ones.
Same as Aurelion Sol.
When is Fiddlesticks not a champion getting screwed by changes?
Can abuse Comet's CD reduction.
Karthus is also a champion that always gets the shaft.
Spammy kit that slows. Comet's fine.
I think we've experienced how fine she is.
In theory should be in the "abuse Comet's CD reduction" group, but is currently too busted to care. Can also use Predator.
Comet, Phase Rush and Electrocute all should work on him.
Same as Aurelion Sol.
Somewhat unlucky. Can use Predator, Electrocute or Phase rush decently well.
Slightly unlucky. In theory can use Comet but her main combo makes it miss.
Can use Comet, tough I'm sure he could make Predator or Phase rush work just fine.
Unlucky.
Part of the Lux group.
Unlucky.
Vlad is weird. If anything, Aery works on him because of the way his kit works, which is short bursts of CDs that can't properly utilize the CD reduction of Comet. Though if he went back to Rylai's he could use it.
Can use Comet.
Seems to be doing fine with Comet.
Zil's kit is weird enough that I can't blame runes for not being perfect on him.
Similar to Aurelion and co. Abuses Rylai's + Comet's CD reduction (From what I hear her plant's attacks reduce it).
I've left the shielders (
) out because Aery is technically made for them, but most of them have either slows/CCs or spammy kits.
Overall, the majority of immobile mages have a rune or two they can work with. I wouldn't say that they got shafted as a class more than any other. I'd say any issue immobile mages have is tied to game balance and items more than runes or, in some cases, the champion itself.