Print the map double-sided. At the start of the game, the Arctic map will be on the pre-warming side. Once the Arctic Warming Command Card is played, flip the Arctic board to the post-warming side and add the additional Water Territory cards to the Water Territory deck.
Map layout by Oksel, design by MrMan2k3.
The bundled expansion pack contains high-resolution versions of the Arctic map and a PDF sheet containing the cards.