Events
Map Initialization
Conditions
Actions
Visibility - Disable Black Mask
Visibility - Disable Fog of War.
Visibility - Create an initially Disabled visibility modifier for (Picked player) emitting Visibility across (Entire map)
Here you go, isn't it like this by default though?
Code:Events Map Initialization Conditions Actions Visibility - Disable Black Mask Visibility - Disable Fog of War.