-iEnables the construction of advanced Shaikan buildings and also raises the number of military unit slots.Shaikan Upgrade.hEnables the construction of advanced Blades buildings and also raises the number of military unit slots.Blades Upgrade/lEnables the construction of advanced dragonling buildings and also raises the number of military unit slots.Dragon Upgrade05Raises the number of military unit slots even higher.Depot1YIf the tower gets destroyed, it causes serious damage to the enemy units in the vicinity.Blades Upgrade2yConjures a flying dragonling who attacks enemies in the vicinity of the tower. The dragonling himself cannot be attacked.Dragon Upgrade3?Resurrects your own avatar and your own heroes in the vicinity.Shaikan Upgrade47Enables the production of marksmen in the headquarters.Weapons Master52Enables the production of destroyers in the Nexus. Black Anvil6'Enables the production of fire dragons. Fire Mountain7+Enables the production of standard bearers.Garrison8&Enables the production of blood mages. Dragon Keep9*Enables the production of crystal dragons.Stone of Eternity