Star Realms: Scenarios Exp.
Star Realms: Scenarios Exp. - Rules of Play says:
When creating your star realm, be ready for the unexpected. The rules of conquest and commerce are constantly changing, and you need to change with them! This pack contains 20 unique Scenario cards that change how Star Realms is played. Shuffle the Scenario cards, flip one over, and use the rules listed on that card for a new game experience!