Known to players as the Brax node, this one sits at the north edge of the Maze of The Mimic in the Necropolis.
Where it is
Maze of The Mimic. The marked map is on the location page: Maze of The Mimic.
Getting it
No trick to the node itself, only to the maze. It is always in place and is never attacked.
Melding
Stand within three squares of the node and use it. The bond raises your maximum mana by three points plus one for every ten points of Mysticism above five, so between three and eight depending on how mystical you are. You can bond with each node once, and the game will list the ones you hold if you ask.