I've always loved the Ents. They are my favorite characters in Tolkien's world. It's seems lately the designers love Ents too as we've been getting quite a few new ones.
I made these two decks to work together. First deck is ents and traps. Needless to say, it's for killing enemies. Second deck is for willpower and cancellation.
Overall strategy: get Treebeard out turn 1 or 2. Steward goes on him. Steward and the Sword on Aragorn as quickly as possible. Galadriel and Gather Information can help with that. As threat on the ent player increases, transfer to Aragorn player w/ Song of Earendil. Double Back is there to help as well.
Let me know what you think. There are no fancy tricks in these decks, but Ents are fun.
EDIT: After some testing I made a few changes to Aragorn's Will. These decks aren't going to beat Battle of Laketown, but they are fun general purpose decks.