I would like to clarify something else to avoid...
If a hero has an artifact that suppresses the natural magic resistance of creatures, and magic works even in an antimagic garrison, is this a bug or not?
Now, to the point: Yes, it is a bug. And it is prohibited. See rule #1.4.2.
prohibited:
....
1.4.2. using magic in antimagic garrisons;
If you have any more questions, feel free to ask, and we will answer. ;)
