These factors are in constant flux because new cards come out all the time and shake up the meta: a more efficient removal spell, a lord that spawns an unexplored tribal deck
March of the Machine Details March of the Machine Set Code: MOM March of the Machine Commander Set Code: MOC Website : March of the Machine Preorder Now : Online at Amazon and at your local game store March of the Machine Important Dates : March 1628 March of the Machine Story Set Debut, Cinematic Trailer, and Previews Begin : March 29, 2023 Card Previews : March 29April 4 Complete Card Image Galleries : April 5 In-Store Prerelease Events : April 1420 : April 18 MTG Arena and Magic Online Digital Release Global Tabletop Release : April 21 In-Store Launch Party Events : April 2123 You can compleat your March of the Machine collection with: Set Boosters Draft Boosters Collector Boosters Bundle Prerelease Packs Jumpstart Boosters Five Commander decks March of the Machine will have five Commander decks
Airbending is particularly valuable when exiling a spell with a high mana cost, making the cost reduction quite significant when being recast
In general, I'd recommend waiting a few weeks after release so that the price of the box can settle at a lower price than right after release - but totally up to you
For example, if you control four lands named Forest, two named Plains, and one named Swamp, you control three lands with different names