It's funny I just won a game by using Grima to bounce 4 cards back into someone's hand. Anyway, I like the idea, but you may be able to expand on it a bit.
Desertion may not be a bad choice,
Leechcraft also has its uses.
Unferth, Grima's Bodyguard would also be annoying combined with
Weary.
I like the free peoples, but a couple ideas. Maybe switch to
Resolute Hobbit over Wicked Master. I know you have Sam, but I think corruption could be a problem if you're adding burdens for them. Probably add a
Gwemegil instead of an
Elven Sword. My other idea is a little out there, but you could always add another site 3 ally and then use
Lady Undomiel. It's harder to set up, but I think it can be fun.