The first arrivals from Midgard Prime were not leaders or heroes.
They were people already accustomed to living in the gaps:
bootleggers
gamblers
smugglers
union men with "flexible" interpretations of legality
They adapted with alarming speed.
Their every day terms shifted from,
Electric lights became mage-lamps.
Foggy alleys became frost-lit lanes.
Hidden rooms stayed hidden.
Mistlefrost City, with its layered streets and sub-ice passages, offered plenty of places to disappear.
Thus began what scholars now call The Age of Quiet Deals, though the deals themselves were rarely quiet.