I like to think of him as some kind of a shaman, like Gul'dan
Ajaxandriel wrote: »In ESO, shamanism seems not to be a specific school nor class like in WoW, it's mainly just a role in a tribe, as said above ^^
When you look at shaman NPCs abilities, they appear to cast Dive (but with a bird model instead of cliffracer). They also use Totem to improve their armor.
Given that, one should use either the class Warden (Dive) or Necromancer (Bone totem) to roleplay a shaman.
But I guess it's OK if you use any class, with the proper gear look.
DK class could be used for some sort of earth/lava/fire/forge shamans, like Minotaur shaman NPCs for example.
Sorcerer class, for lightning/storm atronach/gemstone shaman type ... like the dark shaman costume suggests (it's more speculative).