The Avarice World Boss in Diablo 4 Gold can spawn in one of the specific World Boss battle arenas, that are distributed across the five regions. There will be one World Boss appearing somewhere in Sanctuary approximately every 6-8 hours, though this could be Avarice, Wandering Death, or Ashava and is chosen at random.
If you don't want to rely on guesswork and luck for your World Boss...
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