Dungeons & Dragons: Onslaught - Nightmare of the Frogmire Coven expansion

About Dungeons & Dragons: Onslaught – Nightmare of the Frogmire Coven: Maps & Monsters Expansion, from BoardGameGeek:

While deep in your cups at the Distant Lands Inn, you are ambushed by a hunched and hooded stranger whose very presence chills you to the bone. Before you can react, fell sorcery transports you and your companions to the dark heart of the Frogmire swamp. Ensnared by a sinister coven and beset on all sides, the nightmare is just beginning… This expansion set is a companion to the Dungeons & Dragons: Onslaught Harpers vs. Zhentarim core set, featuring stunning monster miniatures, a new double-sided game board, and eight sinister scenarios designed to freeze your blood and test your tactical acumen. Fight your way to the frightening Froghemoth, with removable tentacles and eyestalks that let you switch between underwater and above water versions! It also features a new deck of item cards to swap with the core set item cards, providing new abilities, and adding the danger of cursed items! The scenarios in Nightmare of the Frogmire Coven take place on the included all-new double-sided map featuring a swamp on one side, and overgrown ruins on the other, both of which use bridge tokens of different sizes to create unique layouts. There are six main interlinked scenarios, a solo scenario and a 3-4 player free-for-all scenario for players looking for new ways to play! Can you defeat your rivals and escape the nightmare? Or will you be lost forever in the brackish depths? -description from the publisher