Laser pointer to the sky

At somepoint somehow I'd managed to get hold of a laser pointerish device that gave some sort of infrared beam, it was supposed to be ifrared in the dream at least. Whenever I pointed at things in the sky, they became clearer or brighter, and when I pointed it at clouds, it was like erasing what I pointed at. So I could draw things in the clouds with the laser pointer, while people were watching. Tried to make smileys and I wrote "Hey". It was a small beam (well huge since it reached the clouds) so it was a bit hard to see where it was at all times. At some point I could make bigger modifications to the sky, and for example I made the sky scroll really fast so that it became light as day when they moved away and then they closed together and it became pitch black as night. For some reason, the clouds followed that cycle whenever I pointed at them and made them scroll, in just a few seconds everytime. I found a way though, to make it scroll openly with much sunlight, and it was really nice to look at. I don't remember exactly what I did, but there was a Minecraft reference apparent because I somehow removed the clouds that closed together from the sky and they were appearing as blocks somewhere at the ground, I think.