Heroes of Land, Air & Sea: Siege Engine Mini-Expansion | Unboxing & Build

About Heroes of Land, Air & Sea: Siege Engines Mini-Expansion, from BoardGameGeek:

An expansion consisting of six siege engines and their cards. The expansion was initially released as a KickStarter exclusive to backers of the 2017 campaign, but Gamelyn Games has stated that they may also be available for direct sale from their website or at conventions. The expansion contains: 6 Siege engine constructs (3 types) 6 Siege engine cards