Does anyone know the spell id of spectral bow?

Dopamin

hi, i am looking for the spell id of spectral bow, the proc from merciless resolve. i want to track it with aura mastery.

xRIVALENx

May be able to find it with sidTools, I can have a look tonight if you have not found it yet.

Baertram

Maybe this helps:
To lookup skills you can use http://esoitem.uesp.net/viewSkills.php
To lookup buffs you can use http://esoitem.uesp.net/viewlog.php?record=minedSkills
-> Maybe you can find it here
All types for lookup http://esoitem.uesp.net/viewlog.php

ArtOfShred

There's no actual proc buff when its up, the bar abilityId just swaps over to a different one.

The id's for each morph are listed on the Nightblade tab here labeled as like "instant cast bar proc ability" or something like that: https://docs.google.com/spreadsheets/d/1UVpe00hL2lR7wO0Fpo30sFMsc603kJqtEPtvWDHkA74/edit?usp=drivesdk