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An Orc doesn't care about that (it's not like they're using incorporeality runes), Orcs always have leadership + it's easy to gather Lion's Courage + they have a war cry to boost morale (and it adds a decent amount), and Necromancy is weak on its own!!! The only exception is Darkness, but you can boost Anti-Magic, and find a Dwarven shield against Berserkers!!
Okay! But then the point of Retribution and Battle Frenzy is lost; at best, it will be 0 or +1, and also, bad luck and low initiative.
Now that's a challenge!