Possessed

Stat	Normal	Nightmare	Hell
% Base Life	600	500	400
% Base Experience	300	300	300
+% Attack Rating	67	56	49
+% Damage	90	75	66

• +20% movement speed
• Cannot be cursed, although Cloak of Shadows and Battle Cry still apply. [1] [2]

Reference

• Special Monster Bonuses (Arreat Summit)
• Nefarius, Boss Status Modifications (1.11b) (Phrozen Keep)
• Onderduiker, Monster Bonuses, Death Damage and Corpse Explosion (Technical Discussion)