Earth 2 v02 - The Tower of Fate (2013)

The World Army has begun rounding up the super-heros of Earth 2, but for what reason? In an attempt to avoid capture, Dr. Fate and Kid Flash find themselves in the powerful magical realm of Nabu. The protector of Nabu, Wotan, seeks Dr. Fates assistance in obtaining a secret magic locked deep within a tower that only Dr. Fate can enter.
Collects (2012-2015) #0, 7-12.