The Black Garden is one of the PvP warfronts in Rift. Here is some unreleased old footage of the Lzuruha Rift squad causing a mess in The Black Garden.
Some key points about "The Black Garden" Warfront from Rift.
Available for level 10 and above characters
The closer you are to the center, the more points you score
You take more damage the longer you hold on to the fang
Killing opposition scores points
Average game time 4-10 minutes
The Black Garden is designed for 10 versus 10
Source:
http://www.youtube.com/user/LzuruhaMedia