You can increase their power with cards like Loxodon Warhammer, help to protect them with Swiftfoot Boots, and even gain some value with Mask of Memory
One problematic card on their end is Liesa, Forgotten Archangel
It has the ability to create a 5/5 flying dragon for , which is pretty good
After sideboard, the game become grindier as we have more ways to remove Heliod, Sun-Crowned
Consider him especially if youre running The Reaver Cleaver or other bursty treasure makers
As of now, the bidding for the card is at one million dollars (check out the details in Bidding For The Serialized 001/001 One Ring Is At One Million Dollars!), and I'm mentioning it here because I'll be looking at the most valuable MTG LOTR cards aside from this