You can be the Stormcrow!
This is a thematic deck, where Gandalf convinces a hobbit to try to steal all sorts of things. In general, your main role is to convince your table to take on difficult tasks. Just like the books, this will really bring out some nasty enemies and locations, where you will probably need to be bailed out by your partner deck. With Bofur and Master of the forge, you can add cards to the staging area at a blistering pace. The only source of threat reduction is Folco, so you will want to hold off as long as possible. You can't attach Ring of Thrór, so swap it out for a halfling determination if your partner deck does not have a dwarf hero.
Now, if you survive all the bad stuff you stir up, and actually get your treasures on, you will have some solid willpower to contribute. This deck will also make you VERY PROFICIENT at setting up the quests again after scoops. This is also a great deck for testing the power of its partner deck, which will have to be able to quest and defend like a champ as this deck blows up the staging area.
You too can feel as welcome as Gandalf in Theoden's hall! Your table conversations may remind you of the pyre of Denethor!