Altar of Elements

• Supports Elemental Chains racial ability.Display elements on own creatures what allows to plan attacks inflicting more demage.Creatures with opposite elements deal more damage to the enemy.
  

Cost: 2000g 3m 3c 3s 3g

Altar of Primal Elements

• Supports Elemental Chains racial ability.Increase damage ot elemental chains by 10%.The more altars you have the more will be the bonus.
  

Cost: 3000g 5o

Ritual Pit

• Boosts creature growth for both Blood Maidens,Blood Furies and Minotaur,Minotaur Guards. Sacrificing of creatures here may result in additional growth rate increase at seemingly random tier.
  

Cost: 1000g 5s

Trade Guild

• Sells Artifacts. At the beginning of each week gives some random resource.
  

Cost: 1000g 5w 5o

Hall Of Intrigue

• Knowledge of all Warlocks is increased by 1 (cumulative with other castles).

Cost: 1500g

Mother of Darkness

• The Mother of Darkness increases weekly creature growth, provides your empire with additional gold each day and boosts magic power for defending heroes.
  Need Tear of Asha to build this structure.
  

Cost: 0