avstrolopitek
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There, the ring gives +1 to morale, and +1 from the archangels – it becomes neutral.
You can gather and upgrade skeletons for any castle; you just can't take Galthran as a starting hero. Read the rules more carefully ;)
That explains why your games take two and a half months.
So, can you catch up on every little detail and raise skeletons (without the Necropolis obelisk)? And why did they write that spellcasting is forbidden?