mtg proxy cards FOIL Rarity from Ponies: The Galloping Magic the Gathering if you cast it Underground Sea Proxy Card with

It is obviously possible you may be able to purchase some extra kits if a store find themselves with a small excess of these but this will likely be quite a limited event

Thalia, Heretic Cathar Thalia, Heretic Cathar is a powerful Stax piece

Ranger of Eos / Ranger-Captain of Eos : Fetch small creatures from your deck when they enter the battlefield

Clearly, little dudes for 1B that always draw you cards are better than little dudes for 1B that sometimes draw you cards

You could also add Teysa Karlov or Drivnod, Carnage Dominus depending on how hard you lean into the death triggers

2 The Ur-Dragon The First Dragon Despite costing a staggering nine mana, The Ur-Dragon is one of the best and most popular commanders in the format