Muldrotha works best with cheap permanents, especially ones that are sacrificed as part of their activation costs: Pernicious Deed becomes a repeatable board wipe, Mystic Remora is downright broken when you never need to pay for its cumulative upkeep, Caustic Caterpillar keeps blowing up stuff, and so on
All of the support I mentioned will also work for other planeswalkers in the ninety-nine, and a diversity of threats in the form of multiple planeswalkers can be very difficult for your opponents to deal with
This can be very strong in decks that mess with your land base, moving them into and out of the graveyard multiple times a turn
The crossover will showcase various iconic characters in the Commander decks alongside new gameplay mechanics
I can only imagine the stories we will hear once the Avatar: The Last Airbender set is released, one that is already making people excited with cabbage sellers and memorable moments represented in the cards Wizards of the Coast has revealed so far