A necromancer
Necromancers:
One of the enemies at Imperial Lands, they are known for its rare rituals and spells, they are also considerated as sadistics for their mutilation rituals.
They follow evil and undead shrines and gods, like the Mother Of Mercy tomb shrine and most of their spells are related with fire bolts and summon undead creatures.
Necromancers can be found at:
Ice Wasteland
Forts
Catacombs
NOTE: As you may see on the picture the necromancers burns logs, well, this is not true, the picture posted was from an old version, currently, the necromancers will not burn wood.