Frodos role here is to leverage consistent life gain from food tokens and other sources of life gain to ensure that you can achieve all four levels of the ring tempting you by the mid-game, and in doing so, generate a ton of card advantage
Witch-king of Angmar is a powerful threat in a fliers deck, can be an awesome Voltron commander, and even a stax piece
This is down to there already being very good Ursulas for her to Shift onto and having the card disadvantage mitigated with her ability
Youll be looking either for a commander that cares about hitting your opponent like Anowon, the Ruin Thief, or something that makes it likely that youll get to hit the opponent with multiple creatures like Oona, Queen of the Fae
Now you don't have to run a dedicated Naya-big guy deck for this to matter
There are three Dungeons that you progress through and although at first I thought that that would be a low number, it seems to work out well and gives you plenty of options to choose from