I have recently realized that I play mostly Lore and Spirit focused decks, with Leadership coming in a close 3rd. Tactics I rarely use ever, or it plays a minor role if I do play it. So, this is my first attempt at a full on combat deck. Please give advice where you see changes that could be made.
Pretty simple concept: make everyone big with your attachments, wipe the board of enemies, rinse and repeat. Ideally, you'll be able to engage a couple of weeks enemies and not kill them to get the most out of Amarthiúl. The attachments, with the exception of a few unique ones, can go on almost any of your allies or heroes depending on what you need or want. Sword that was Broken helps with questing in the late game if you and your teammates are having trouble in that area.
As with all decks I post, the deck goes best with a deck that can quest, heal, threat reduce, etc. I just find playing with other people to be more fun than solo. Best of luck with the deck, please post any changes or suggestions below!