if you're looking for a speculative bet, this might be worth a look
not sure what the population is, but it's the only foil version of any of the "banned for cultural offensiveness" cards, and you can find them for a fair amount cheaper than its Alpha/Beta counterparts
foils can be had for under $75 while the black border OG cards are in the hundreds
most similar cards (special foil of Alpha/Beta/early set) have seen the foils rise much closer to the OG value (Swords to Plowshares, City of Brass)
historical significance, resurgence in crusade-esque beliefs, might help here too