When it comes to commanders, theres one obvious choice: Bruvac the Grandiloquent
Its extremely clunky as a self-contained engine, but you can maximize the static ability by surrounding Tasha with other theft and Gonti, Lord of Luxury effects
Most plot cards have an equivalent casting cost and plot cost, which raises the question: Why plot cards if you're paying the same overall amount of mana
It won't copy counters on that permanent or effects that have changed its power, toughness, types, color, and so on
Instead, the absolute mite body has no resistance
Mime probably isn't the top choice if you're looking for a card that has the potential to increase in value over time, but it's a polarizing card that might be a great addition to your Kantonian binder collection