What a fantastic adventure! I had the pleasure of playtesting a portion of this adventure and I must say it is a blast to play through as well as run. With Across Eberron being a whirlwind tour of the setting, a trip to the lightning rail was a guarantee at some point and it is an incredible jaunt chasing through the train. The sequence diverse and challenging for players, with a climactic finish involving jumping off a train. The second half, taking place in a celestial bureaucracy in another plane of existence is also delightful, providing a very otherworldly and flavorful environment to play in. The only hiccup may be the sudoku based puzzle, which while enjoyable may not be a fit gor all groups. Still, it is optional. A meaty and thrilling entry into the series.