The screenshot is kind of low quality (if you zoom in you can count 12 crows), but if you shoot crows straight up you can tell there is a missing crow from the pattern at the bottom left. This is deeply upsetting...
Abilities I found that arcane surge doesn't apply to:
Vindicta's Flight
Seven's Power Surge
Wraith's Full Auto (T3 upgrade to add the spirit scaling)
Screenshot showing the damage output of arcane surge with flight:
Vindicta's 0.2 spirit scaling means the default +12 from T3 spirit scaling...
