Cutter John wrote:
Hopefully it'll work like Tallgrass and only effect new worlds and unexplored chunks.
Cuz I would be seriously pissed if my treehouse were to suddenly rez in the middle of a desert.
It wouldn't replace the dirt blocks with sand, but you could find yourself in a situation where all the grass in the area would turn brownish and it would never rain. In fact, it could change the area around your home area into a mushroom biome and turn the grass purple for all we know.