Art Director Ovidio Cartagena tells me this was one of their very first ideas for the set, saying Middle-earth has such a specific geography, and it is of course one of the genius details of storytelling that influenced a lot of subsequent works in fantasy and science fiction
Dont add all of your high-cost cards to the Inkwell, or you may not have strong cards to play later in the game
The Grim Captains Locker This is a pretty interesting legendary artifact
Once you have a good amount, you can use the alternate commander from the deck, Vihaan, Goldwaker to transform all those Treasures into 3/3 artifact creatures that are also outlaws, giving them all vigilance and haste, both giving your other outlaws a huge boost, and your newly animated Treasure tokens the ability to swing out on the same turn
Its facing a weird meta now after some nerfs to dominant decks like energy, but with Eldrazi emerging unscathed from bans