This leads me to the assumption that the sheet fearures H7, H6 and H4 cards, meaning the final forms of the starters appear half as often (rounded up) than the most ubiquitous holos
The exact reason for this isn't 100% clear, but my theory is that when a card like Solemn Simulacrum, Sol Ring, or Cyclonic Rift gets reprinted, the very act of reprinting increases the demand for the card (apparently enough to outweigh the increase in supply)
The mini-set will be released soon, with some speculators theorizing that soon here means December 16th, on the heels of the current Versus events conclusion
Commander Party play aids and party cards** provide to players to reference special rules during the event
It is harder to fail if you search on the premise that not being sold overseas does not exist. 4
Others, like Inkmoth Nexus or High Market, only produce colorless mana