What it does: 30% of your total damage in a 90% area (derived from the area of effect of the explosion) over 6 seconds.
Pros: Why you would use it
A: In low level defense/survival/interception missions to get more value out of each rocket as the napalm damage should kill any enemies that walk over it.
B: In high level missions where you are going to camp a spot and need the Crowd Control to keep them still while you blast them with rockets.
A: If you already have a crowd control Warframe (i.e a Vortex Vauban) Nightwatch Napalm becomes overly redundant.
B: It’s usefulness diminishes if you are not camping an area where lots of enemies come to you.
C: You obviously lose direct damage on impact