The Gift, and the Mayhem it brought..
Nexon did it before, and just like the 1st anniversary, the anniversary swords returned. Everyone enjoyed them (not as much as the new blood though hehehe), perhaps too much. The day of great reset, and the Anniversary Sword Protest blocking North Gate Mythic.
This photo report contains information that was relevant at the time of writing which was during the second Anniversary of Nexus. Information found here should not be used as a reference for the current Nexus.