I mentioned in the last update that we were working on replacing the duplicate powers across the factions. Well, this update will showcase some of the replacements made in the Mordor spellbook. Industry and Devastation are both going to be replaced and become Isengard uniques. Here's what were replacing them with:
Slave-Fields of Nurn
Replacing Industry, Slave-Fields of Nurn causes all of your unit production buildings (for example Orc Pits) to produce resources. The amount collected is however small, and does not increase with the level of the building. Still, it will provide a strong boost to a Mordor economy.
Sorcery of Dol Guldur
Adding to Sauron's arsenal of powerful units is the Castellan of Dol Guldur, a monstrous suit of armour animated by dark sorceries and set to watch over the lands of the Dark Lord. Sorcery of Dol Guldur summons a single Castellan, immediately terrifying nearby units and providing the player with a slow but potent melee unit. Castellans possess the Unwavering Vigilance ability that allows them to passively detect hidden units and the Cursed Steel power which reduces damage from non-hero attacks greatly for a short period.