Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks Black Cove - room with storm cloud

I know the room you are talking about. you set off a trap in the corner that activates the cloud. it is underneath a barrel.

you must have moved the barrel. I "discovered" that trap because I sent a fireball into the room to clear the other two traps, and it burned up the barrel covering the static trap.

reload to before you moved the barrel, or just ignore that corner of the room. there is nothing of worth in that corner.