One Card Dungeon Adventure Pack: Harbour Clash

From unfathomable depths, an ancient power stirs. The dark abyss, home to forgotten creatures, opens wide, releasing a threat that rises with the tide. The waves carry a chilling omen of destruction.
Only those brave enough to face the unknown can push back the darkness and save the harbor from impending ruin.

One Card Dungeon: Harbour Clash is a standalone adventure that follows the same setup and rules as the base game and the M’Guf-yn Returns expansion, with some unique new features.
A new Dungeon card, a new class, and the new Item module!

—description from the publisher