Tips for finding blood slaves appreciated here

[Graeme Dice]

Originally posted by Zen:
So this is the best of both worlds, then when you need to convert to a higher blood output you convert ~5 priests with dousing rod to your 5k+ province with 0% tax and watch the blood roll in.

5 priests will only give you around 20 blood slaves a turn. If you want enough to make it truly pay off, you'll want 10 priests at least, if not double that.