The unknown power sources that fuel the Arcane engines. Not much is known about the wells others than they are few and far between. Large wells are even rarer and most are claimed by large kingdoms who have built cities over their centers and would fight dearly to protect their ownership of these lands. Most believe the wells are gathering areas of the worlds natural magical energy. Most believe it gathers much like water gathers in ponds and lakes. What causes these wells to form and remain is beyond any common knowledge in the world.