Lore and Leadership deck for Return to Mirkwood.
Denethor for skill and defense, Glorfindel for questing and attacking, Theodred to spare resources around.
Focused on peeking encounter deck (Denethor, Riversong, Rumour) and avoiding some treachery and shadow effects (Denethor, Dunedain watcher, Dawn take you all).
Some card drawing (Gleowine, Lorien's Wealth, Campfire tales, Rivendel Minstrel for song) for interesting cards (Forest snare, Celebrian, Steward of Gondor, Gildor, Gandalf+sneak attack, in the other deck Elfhelm, A test of will, Feint, Radagast, eagles...) to appear .
Typicall support cards from Lore and Leadership: healing, avoid threat in questing, +willpower/attack/denfese
Some combat allies too, since complementary deck has just 1 Tactics hero.