Pretty stereotypical Silvan deck, but now that I have Thranduil in, I decided to sub him out for Gandalf and leave Celeborn and Galadriel in place.
I started with 1x copy of every unique Silvan, then filled out with Silvan allies from there. Then I plugged in all the new shiny attachments. Mithril Shirt, Ancestral Armor, Elvenking, Magic Ring, and O Lorien go on Thranduil. Celeborn gets Orcrist, the extra Ancestral Armor, and Necklace of Girion, while Galadriel gets Nenya.
Then we dump in all the Silvan events and just bounce allies until we win the game.
The biggest hurdle is drawing into Lore cards we can't play, but Thranduil smooths that out for the allies at least. Drawing into O Lorien in your initial hand is key, so I'd mulligan hard for that.