Expert's Corner (by ThE_HyDrA)

The Ritual Pit is an inexpensive way of boosting early creature growth. Additionally, it strengthens the Blood Witches through the way of numbers, augmenting their good attacking abilities further. You may also decide to take a risk and sacrifice creatures for a growth rate at a random level, though the normal effect of this building justifies the small 1000 gold needed to build it. If Sulfur poses a problem, it could be foregone until later on. The Trade Guild can also be useful if the player has artifact duplicates or is willing to trade some in for gold/resources. Since it is cheap and provides a random resource each week, there is no harm in building it, but focus on the more integral buildings first.

Undoubtedly, the most influential of Dungeon's Special Buildings are the Altar of (Primal) Elements. The Altar of Elements is a given, despite its cost, and even without Elemental Vision enables spell chain damage. The Altar of Primal Elements is potent due to its cumulative effect, but in the early levels has a rather minimal impact on the already small elemental damage bonus.

The Hall of Intrigue's major benefit is increasing the knowledge of your Warlock heroes by 1. The destruction of two buildings is a double-edged sword, seeing as, in most situations, you'd like to retain control of the castle, and it pushes back development.