Shaman's Hut/1.03.25

Orcs
Up until now, the Orcs haven't had much need for crystal - with only a single unit and a few researches that required some (and then Dragons later on). That all changes with the Shaman's Hut. Not only does the building itself requires crystal to be built, but the unit it produces, the Goblin Shaman, requires an extreme amount. Goblin Shaman are fantastic spell casters and a large horde of them will raze anything that it unfortunate enough to meet them. Even a well defended base can be over run momentarily. With such a powerful unit that has a slow production time, you would want to get as many in production as you can afford. This usually means that you'll be building quite a few of these buildings - not as many as the Battleyard, but certainly more than any other "side" production building. It's also a good idea to set the attitude of these buildings onto "Magic Defender", so your Goblin Shaman produced from it automatically adopt the same attitude.