Card intelligence brief
If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add one mana of any color.

Sales, inventory, and broader Magic demand signals for Mox Diamond.
RSG intelligence changes as sales, inventory, and market signals change. A demand signal is not a binding purchase offer.
Start with the closest functional alternatives, then narrow by what matters for your deck.