Maybe a copy or 2 of
Lend Us Your Aid to help you win the skirmishes. I think you desperately need condition/possession removal and
BRC is one of the best. Why not run
Gimli's Battle Axe instead of
Axe of Erebor. It also helps with the wounding idea of the deck.
As for the shadow... all those events will clog your hand. 4 copies of
The Ring is Mine is too much and there is not a very good chance of winning skirmishes.
Fell Beast would help a lot. Twilight Nazgul without
His Terrible Servants is like Rohan without horses - severely weakened.
Also, when I make a corruption shadow, I make sure I go second (which means bid 1 or 2) and play Pellenor Flat as site 5. Your freeps are quite vulnerable to corruption and your site path is not helping you. I almost always run
Frodo, Resolute Hobbit with a Corruption Shadow.
Another thing that goes well with almost any shadow, but it would go great with yours is
Gollum, DaD, few copies of
Captured by the Ring and
Northern Ithilien as site 8.