If so, let us know in the comments or on Draftsim's Discord
It's quite mathy, but he goes into a great deal of detail and explains his rationale, while not ignoring the realities of the game (there are one-mana Cycling cards, cards that fetch lands, cards that tap to add mana which aren't lands, and more.)
This Plains is actually part of a diptych, a single painting combined with the Forest he did for Lorwyn, and that was later cropped down to become two separate cards
Like most Magic: The Gathering cards, the value of Gold Myr depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Scars of Mirrodin)
As a commander, Tamiyo, Inquisitive Student is fine for generating some extra artifact tokens, and if you build around Clue tokens youll have a good amount of them to work with