Shadows of Brimstone: Derelict Ship Promo Cards

There are two promo cards for Shadows of Brimstone Derelict Ship. These are 2 artifact cards: Promo-160 - Mine Artifact Void Grenade Promo-161 - Derelict Ship Artifact Dark Stone Prism They are available when purchasing the Derelict Ship Expansion direct from Flying Frog (also at Kickstarter) or at conventions.