It was announced that Khans of Tarkir will be fully added to MTG Arena in 2023. But if Spreading Seas is too much for Historic, what will they do about the notoriously powerful ally-color fetch lands? (Flooded Strand, Polluted Delta, Bloodstained Mire, Wooded Foothills, and Windswept Heath.)

Resolves YES if these cards are Historic-legal at any point in 2023. Resolves NO if they're pre-banned, not added with the rest of Khans, or if Khans is delayed to next year. If for some reason only some of the ally fetchlands are added, I'll resolve to the percentage at the end of the year.

General policy for my markets: In the rare event of a conflict between my resolution criteria and the agreed-upon common-sense spirit of the market, I may resolve it according to the market's spirit or N/A, probably after discussion.