in game there is a necromancer class that you get from leveling up these classes as follows dark priest(priest(cleric)) and Sorcerer(mage) a place to find alot of game  information  is here https://www.nations-software.info/help/endless-depths-help/
it may say endless depths but  this is  endless depths 2 rpg  and not endless depths rpg  as in the first game of it