Endless Winter: Ceremonial Grounds Module

From BoardGameGeek:

Individually packaged module for Endless Winter. At the end of each Eclipse phase, players have the opportunity to take a Ceremonial Grounds card from those available in a supply, and immediately score it. These cards offer immediate points for certain achievements. You can gain a lot of points by meeting the criteria, but the catch is twofold: you can only score one of these cards per game-and you can no longer bury any cards thereafter! In order to signify this, the card is placed landscape orientation on top of your buried cards pile. Timing is key for playing these well: Too soon, you might not score very many points; too late, the card you most want might get taken and scored by an opponent.