dnd/deadsands/sources/regional_effects.yaml

metadata:
  headers:
    - None
    - Effect
  frequencies:
    default:
      Effect: 1
Effect:
  - Add 1d6 to radiant damage 
  - All fire damage becomes cold damage
  - All cold damage becomes fire damage
  - Nightvision not functional
  - Everyone has Nightvision 
  - When a spell attack misses, it hits a random creature within 5 feet instead
  - On a spell attack critical hit or miss, roll on the Wild Magic Table