The simplest explanation to your problem is: Don't play expanded.
If you play expanded, you almost have to play Hunter minions because everyone is going to play hunter companions (for the most part). Gimli, Skilled Hunter,
Rumil, Silvan Elf,
Orophin, Silvan Elf, Aragorn, Throngil...those guys are just far too common.
Fell Beast is one of the best cards for
![Wraith [Wraith]](https://lotrtcgdb.com/forums/Smileys/classic/wraith.png)
decks because it helps you cycle a lot. Cycling has always been a problem with so many unique minions, but
Fell Beast is great for that. And with a copy of
Morgul Skulker or two, you can get them back if needed!
But I am glad that you understand my point that your Witch-King is not going to win very many skirmishes and thus your Shadow is not really at all a one-turn kill. In fact, it takes many turns to set up and has a limited success rate.
-wtk