If anyone wants to try a prompt to turn the key into some rooms, here is the raw key data:
Design Key: Castle Greyhawk, Level 1
1,-,Kobolds,9-16,5,63,-,"Dust colored silver mirror, 750 gp"
2,-,Goblins,7-12,8,71,-,10 gp
3,-,Giant Rats,3-12,5,38,-,Potion of strength
4,-,"Bandits, warrior...