PEON
needs Great Hall.
GRUNT
needs Barracks.
TROLL AXETHROWER
needs Barracks and Lumber Mill.
TROLL BERSERKER
needs Barracks, Lumber Mill and Stronghold.
CATAPULT
needs Barracks, Lumber Mill and Blacksmith.
OGRE
needs Barracks, Blacksmith and Ogre Mound.
OGRE-MAGE
needs Barracks, Blacksmith, Ogre Mound and Altar Of Storms.
GOBLIN SAPPERS
need Goblin Alchemist.
DEATH NIGHT
needs Temple Of The Dammed.
ZEPPELIN
needs Goblin Alchemist and Lumber Mill.
DRAGON
needs Dragon Roast.
OIL TANKER
needs Shipyard.
DESTROYER
needs Shipyard.
TRANSPORT
needs Shipyard and Foundry.
JUGGERNAUT
needs Shipyard and Foundry.
GIANT TURTLE
needs Shipyard and Goblin Alchemist.
STRONGHOLD
needs Town Hall and Barracks.
FORTRESS
needs Stronghold, Lumber Mill, Blacksmith and Ogre Mound.
OGRE MOUND
needs Stronghold.
GOBLIN ALCHEMIST
needs Stronghold.
ALTAR OF STORMS
needs Fortress.
DRAGON ROOST
needs Fortress.
TEMPLE OF THE DAMMED
needs Fortress.
GUARD TOWER
needs Scout Tower and Lumber Mill.
CANNON TOWER
needs Scout Tower and Blacksmith.
SHIPYARD
needs Lumber Mill.
OIL REFINERY
needs Shipyard.
FOUNDRY
needs Shipyard.