Only a few details about the Streets of New Capenna Commander decks have been revealed so far
Smaug boasts a powerful ability: whenever he attacks, Smaug deals damage equal to the number of treasures you control to any target and he generates a treasure token at the beginning of your upkeep
If you do, untap this artifact
(6/16/2023) Abilities that apply "as [this permanent] enters the battlefield," such as choosing a color with Gauntlet of Power, are also unaffected
Im more curious about this in some kind of blink shell (think Roon of the Hidden Realm decks in EDH), although Im not sure you want an 8-drop there
Add to that the option to divert damage taken back at any target (including players), and She-Hulk could be a nice way to mutually assure destruction in the late game, pushing rivals to attack each other