Nidhoggr

Nadrach committed suicide in 1998.
Pete from Diaboli was a session drummer for the band. On Diaboli's
"Unseen Age of War" there is also a song written in co-operation with
Nidhoggr.
Nidhoggr (or Niðhöggr) is a dragon chewing on the roots of the life-tree
Yggrdasil in the Nordic mythology.