I choose permanence when the goal is to bend a realm into my will for ages, to let the maze itself be a kingdom; I choose fleeting illusion when I need to alter a moment, to divert a single assumption before the tide shifts. I weigh the cost of maintaining a structure against the value of a quick diversion, the enemy’s patience, and the long‑term reach of my influence. If one wrong step can be kept in place forever, I build it; if it’s only a trick to pass an eye, I keep it a shadow.