Note: Is only in the Armageddon's Blade expansion.
- Fills the town's Mage Guild (up to mage guild's level) with all unbanned spells. (Excluding Titan's Lightning Bolt)
The best Grail building, all heroes that enter the town get all spells there is in the game. However, in games with lots of towns all the important spells may be available even without Aurora Borealis.