That's not true. The weakening strike is applied at the level it would be applied at if cast by the hero. And Orcs will always have it at the unskilled level, as you can't invest in Darkness (just in case, Dampen Darkness doesn't affect the strength of the weakening strike).
Plus, the bonuses from Blood Fury will replace Fire Wrath, Cursed Lands, and the Dampen skills themselves.
Dampen Chaos and Darkness can be skipped.
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