Naglfar was a single-mission Event similar to Feed Santa's Starving Reindeer. It required the Mission Item Fingernails. You have 10 days to complete the mission. If you master the mission or the timer expires, you can reset both for 30(?) favor points and earn additional abilities. The event ran in January and February 2011.
Defeat the Frost Giant
The Viking warrior Hrym is foretold to command the invincible boat Naglfar into the final battle Ragnarök. You must collect Fingernails of the dead to ambush the giant and steal his axe. Once Hrym lies slain at your feet you become captain of the Naglfar and you are destined to one day fight the gods.
See: Naglfar Mission
See: Naglfar ability set
In Norse Mythology, Naglfar or Naglfari (Old Norse "nail ship") is a boat made entirely from the fingernails and toenails of the dead. During the events of Ragnarok, Naglfar is foretold to sail to Vigrior ferrying hordes that will there battle with the gods.