You can really set up an asymmetrical battlefield sweeper here by casting something like Naya Charm or Cryptic Command on an opponents end step, then untap and cast Dont Move
As far as Magic Arena goes, there isn't really a way to get the deck cheaper than eight rares and four mythics since Dorothea, Vengeful Victim, Katilda, Dawnhart Martyr, and Hallowed Haunting are the foundations of the deck, although turning a rare dual land into Evolving Wilds does help with the cost a bit there as well
Vedalken Shackles and Willbreaker are some of the oldest repeatable theft effects in the format, and I still think Vedalken Shackles can be really strong in the right build
While I am not an avid player, it was harrowing to realize that I have been witness to the birth, history of bannings, and current status of the format
That isn't why it's valuable it's a shiny Mew as a gold secret rare, and it's a total collector's piece but it is cool that Celebrations can be played with as well