I also wanted to let you know that the tier (1-3) of the devotion determines the amount of experience you need to level them up with higher tiers requiring more but often having a lower max level (10-15). So, for example, with your Purifier if you picked up Ghoul at 80. You’d level it to the teens in 2 or 3 character levels and complete it easily before level 100 because the amount of experience you need to level your character is so much higher and you are getting xp so much faster.