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It's not very long but it is an excellent shortcut for the GM looking to populate far northern clime with their own pantheon.
I've always been a fan of the Celtic Mythos. I've heard nothing but good things about the Castles and Crusades game, so I look forward to implementing this aid and tossing some different dieties in the mix.
These deities fit the Haunted Highlands very well. They enhance aspects of the adventure series and the characters playing in that setting.