Hmm... Which expansion came out first: The Coming of the Storm or Whirlwinds? I'm just asking because in the editor, the units are divided between the sections of these expansions. To be precise:
The Coming of the Storm - buildings: coliseums, conservatories
artifacts: tiger armor, harmony chainmail, etc.
units: goblin knight, champion of darkness, witch, gargantua

Whirlwinds of War - catapults, raging bull, megadragon