Banefire

Banefire is the failsafe that destroys what hidden under Demonreach island. First mentioned Cold Days.

Description
Banefire is the failsafe that destroys what's hidden under Demonreach island. It was put in place by The Original Merlin should there ever be a threat that releases the vary dangerous entities imprisoned underneath the island.

Appearance
A scarlet and blue light becoming a white destructive "FIRE" destroying everything.

Details

 * It will kill all the Naagloshii and the Dark Gods imprisoned in the deep well under Demonreach rather than allowing them to escape.

In the series
In Cold Days, the Demonreach Entity showed Harry, through Bob's projection, a scarlet and blue light becoming a white destructive fire destroying everything. Bob explains that a directed burst of energy, a whole lot of it unravel the containment spell Merlin laid down with triggers the fire which they call the "Failsafe".

Later, Donar Vadderung met harry at McAnally's Pub, he call the failsafe that Demonreach showed Harry: "Banefire".