As AC said, it isn’t required. Most games my deck adds more burdens from bound and courtyard. It’s hard to win skirmishes in a meta so keen to tear you apart via round-a-bout methods (archery and ...
Uruk-hai have possibly the best minion archery ever... they don’t need help. The new while simple (lacks depth) is still incredible strong, if not just for shingle in a storm....
Any good Orc Corruption deck would pack at least 3 unforgiving depth and mostly underground sites in the deck, excluding a courtyard parapet and maybe a support site for your fellowship or two.