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[CMM] Pearl Medallion
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Instructions very confusing on this one. Without knowing the mechanic, I would be very confused as to how to play this. It seems to be pick a side, play it, then later turn you can pay to unlock the other side. But why the reminder "that door unlocks"?
Probably there are ability triggers like "when a door unlocks". The reminder could be there to make clear that these effects also trigger when a room is cast and that it does not enter already unlocked.