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An evocation is an ancient Roman ritual to steal the favor of your enemy's god by giving that god a better temple and better cult in Rome. It's dominating someone else by "owning" their idols.
I think this is good and should be brought back to the culture war.
Iconoclasm: negative-sum, finite game (you run out of idols), reduces believers to suppressing surprise out of fear of loss.
Evocation: positive-sum, infinite game (always more theo-cucking to be done), elevates believers to cultivating surprise out of hopes that the gods feel the allure of novelty.