How has Ceremonial Magic not destroyed your game world?

[Icelander]

Originally Posted by Turhan's Bey Company

That said, you could incorporate dueling mass wizardry into your campaigns as a plot point. Assuming it's a tactic which exists in your world, every army will have a batch of wizards doing this sort of thing and will take countermeasures: wizards equipped with Counterspell to neutralize magic directly, assassins assigned to bump off wizards, skirmishers sent to harass and disrupt time-consuming ceremonial castings, spymasters engaged to bribe assistants to be "against" castings (and therefore subtract from available energy), and so on.

I saw this old thread and was driven to remark on how succinctly TBC has described the roles of PC adventurers in fantasy warfare in games I run with powerful wizards.