(Biome) Haunted Marsh

The Haunted Marsh should be a rare variant of the swamp biome. In this biome no matter what time of day it is it will always be covered in thick fog. In the Haunted Marsh there could be a new structure like an abandoned fishing house ,a well ,or even an abandoned cabin. With this new Biome would come a new mob called the bride inspired by la yodona from Hispanic folklore the bride would make a weeping noise. Once the bride sees you she will hover towards you somberly when you look at it but when you look away it will speed up. (I did not know what the bride should drop when killed) please leave suggestions