The Masquerade expansion adds a masquerade ball to the ballroom during the third week of the Season Phase. In order to attend you have to collect a mask on the Hive Board. They are clear tokens that you may set on your Player Mat character. There are clear cards that overlay the Ton and L&C cards in the ballroom during the third week. They mask the people on the cards and they provide both a wild crest and allow you to select the influence of your choice to gain on your influence track. Additionally, the expansion adds a a new card to the L&C deck with a masquerade specific end game scoring goal.

description from kickstarter campaign