How to make an ability make the map really dark?

[Nackel]

Like you cast it and it becomes like an exaggerated midnight.. because setting the clock to midnight isn't dark enough.

 

[XeNiM666]

You could use a black fade filter.

 

[Nackel]

You could use a black fade filter.

What is this, and where is this?

 

[XeNiM666]

A fade filter is a picture shown onto the whole screen for a duration.

• Untitled Trigger 001
  • Events
  • Conditions
  • Actions
    • Cinematic - Apply a filter over 10.00 seconds using Normal blending on texture Black Mask, starting with color (100.00%, 100.00%, 100.00%) and 100.00% transparency and ending with color (0.00%, 0.00%, 0.00%) and 0.00% transparency

 

[Pharaoh_]

http://www.hiveworkshop.com/forums/requests-341/spell-request-134251/#post1199312
I had made this for a spell request; it shows how the filter is used for an enemy player when he is in a region of a spell. You will get a real picture of what this is.