Should work if opponent has no skirmish abilities and with Ferny also out. It will mean that you will certainly win a skirmish. Then discard all the possesions and on the next turn finnish it with about the same trick.
But understand what you mean by
parry, but doing all those tricks makes it complicate. But this is just how I would do it.
You could take out the smiths and put in some Uruks (Spy in my opinion) and take something out for 2
parry's (more would be to much imo.
Sting or
Glamdring only sees what your opponent has in your fellowship phase. Your opponent cycle's in your turn, so
sting or
glamdring are just good additions, but no safeguard. White arrows is usefull, because you will empty opponents deck and then you can do the fernybomb on site 9.