Dreamcatcher
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I've had instances where, even on Expert difficulty, the artifact box turned out to be empty :( and I don't even know what I missed out on :D
Regarding the topic. Let's reason logically. The rules require the guild to be built to a corresponding (or maximum possible) level. The rules do not require the hero to have the appropriate Wisdom, and the game itself does not prohibit casting spells from scrolls of a level higher than the hero's Wisdom. Therefore, the guild, as a source of magic, grants permission to use scrolls. The rules are silent about artifact boxes. But the box is also a source of magic, so it would be logical to give it the same privilege – to allow the use of a scroll without Wisdom requirements. However, it needs to be clearly defined what exactly and which box allows. If it contains a specific school, then it allows the use of any level scrolls from that same school. If it's a specific level, then it allows scrolls of any school of that level. The only difficult case is when a hero with basic Wisdom eats an empty box – what was in there, level 4 or level 5? In general, we need to think about it...
Regarding the topic. Let's reason logically. The rules require the guild to be built to a corresponding (or maximum possible) level. The rules do not require the hero to have the appropriate Wisdom, and the game itself does not prohibit casting spells from scrolls of a level higher than the hero's Wisdom. Therefore, the guild, as a source of magic, grants permission to use scrolls. The rules are silent about artifact boxes. But the box is also a source of magic, so it would be logical to give it the same privilege – to allow the use of a scroll without Wisdom requirements. However, it needs to be clearly defined what exactly and which box allows. If it contains a specific school, then it allows the use of any level scrolls from that same school. If it's a specific level, then it allows scrolls of any school of that level. The only difficult case is when a hero with basic Wisdom eats an empty box – what was in there, level 4 or level 5? In general, we need to think about it...