Harbinger of the Seas and Curse of Marit Lage on the battlefield.
Steps
Because Harbinger of the Seas causes all nonbasic lands to be Islands, and Curse of Marit Lage prevents Islands from untapping during their controller's untap steps, nonbasic lands do not untap during their controller's untap steps.
Results
Nonbasic lands do not untap during their controller's untap steps.