Tormented Spirits now have ~20% more Life per level from level 55, scaling up to ~560% more at level 83.
They now have a tapering less damage taken buff which activates upon entering their range, and eventually scales down to no damage reduction after 15 seconds.
For every enemy a Tormented Spirit touches, it increases the damage the spirit takes by 5%.
Their AI has also changed quite considerably. Spirits now more aggressively touch monsters that aren’t already touched, and more aggressively possess Rare or Unique monsters.
Stats that add Tormented Spirits to an area are now all consistently described as "haunted by" instead of sometimes being "contains".