After questing in Silithus, I noticed that I can’t use some defensive mage spells like Invisibility and Ice Block. I get the error, “You can’t do that while holding the flag”. I’ve logged out, as well as disabled all addons (just in case), but no change. This occurs no matter what area I am in, and even when I’m teleported to dungeons via dungeon finder.
Sounds like you activated a silithyst geyser.
I did, and I understand receiving that message in Silithus, but I’m receiving it everywhere.
Dying usually clears debuffs that don’t want to go away. Don’t know how else to help you troubleshoot it, I don’t play classic.
For no reason at all, spells are working properly again today. Luckily I’m past Silithus quests, I won’t be going back there for a while…