Wow, it actually didn't take me that long to read it haha 
Anyways, it's time to review Shaman Shepard!
Art talk:
The art is really clean! There are very little moments where I thought "hmmm, that expression or pose looks awkward". Well done!
The scroll format works well for your comic too.
Plot:
I think you've set up a neat power system that kinda reminds me of the stands in JoJo's Bizarre Adventure. The idea of spirits and shaman feels good and you did a neat job on showing it in the prologue without leaving a lore dump.
The dialogue and characters feel natural enough for me.
As for the plot, I can't guess too much because you only have 8 episodes, but so far it seems to be consistent and I don't see any plot holes really. Keep it up!
Overall, I think your work is very solid! My advice is to just keep going. also that may be why I subbed hehe