Given that this is only the second printing of Minas Morgul, Dark Fortress, a meaningful price drop of 30–50% is likely in the weeks following the release. The card's unique ability to grant shadow counters finds niche play in Commander decks that focus on creature type manipulation or shadow synergies. Its thematic appeal and specific utility mean there is some demand, but not enough to prevent a significant price shift.
If you've been wanting a copy of Minas Morgul, Dark Fortress, it would be wise to hold off a few weeks after the set's release to take advantage of the expected price decline. Conversely, if you own multiple copies, consider listing them soon before additional stock floods the market.
Minas Morgul, Dark Fortress