caliban
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How does the upgrade mechanic work in such a situation? For example, I'm playing as Stronghold, I've built a level 2 Castle, I find a level 5 scroll, and I capture a Dungeon. Do I need to build a Grand Mage Guild in the Dungeon, or is it enough to upgrade the Grand Mage Guild to level 3 in the Stronghold to be able to use the scroll?
