After the Star attack of the Frostwalk, the Moradfilki laid siege to the three gods Tempus, Auril and Tyr in their Thozeian fortress of Tir Nael. It eventually ended with Tyr's Surrender. Alternatively, The Siege could describe the period of magical drought for human clerical spellcasters from 80+ OW.

The Siege

As the dwarf-sons were unable to invest the fortress immediately, they had to lay siege to it. There were at all times at least two deities around the fort. Over time, they erected magical barriers to completely block off the three gods. This wall grew close to impenetrable by the end of the siege.

Effects

The siege is most famously known for the devastating attacks it had on the Human Pantheon's fugue. Not only were three out of five deities besieged and increasingly unable to respond to prayers or draw strength from them, but a fourth god - Waukeen - was being held prisoner. The devastating effects on human magic known to them as The Siege did not even end with the actual siege, as Tir Nael's occupants were then incarcerated by the dwarves.