A one-shadow fog (Solved)

[Link in Pink]

I'm wondering if it's possible to have a fog that doesn't repeat, it just shows the one shadow of a cloud.

I'm making something where a big object flies over the town, and a single huge shadow engulfs everything for a few seconds.

Is that possible?

 

[Hevendor]

Why not use a picture...?

 

[Link in Pink]

Oh, didn't even think of that. hahaha...

Thanks,