It doesn't crank up the damage much more it is 1d6 more per arrow.
And it is by far not the most powerful of the list. I is up there but there are several others that a powerful.
Both Aasimar and tiefling can get natural attacks from it, Cough which I have used. Hello Pass as human oni born tiefling werewolf cult leader warpriest.
Getting claw attack for giving up darkness and you keep everything else. At lvl 1 infact you could do claw and bite at lvl 1.
Oh about ask GM. Living Campaign and GMs I RAW/RAI period.