Plasma terraforming Tool

I woke up while dreaming about this this morning. So before it slips away I decided to write about it.
fiction?
It appears one of the 7 billion humans on earth has obtained such a device. How this has been done I can't really imagine at this point. The most likely way would have been through some type of time travel into the future of earth. However, this device has to have a galactic license because it looks like a weapon and though it could be used as a weapon this is not its primary purpose.

It's primary purpose is to level mountains and to instantly evaporate lakes when builders want to fill in lakes. Leveling mountains is obviously for wanting a level surface on which to build. However, no one does either of these things if people are breathing the air of that planet because instantly vaporized earth, rock or water can be deadly not only from the heat until it dissipates but also from the toxicity level in the atmosphere for a while.

The primary reason I'm writing about this is that wherever this device is experimented with by a person whose dna and fingerprints or whatever not previously programmed into the device the results aren't good. Depending upon the model the device self destructs 300 feet in all directions up to 1 mile in all directions. So this device shouldn't be around people who live or work within 100 miles if you want them to live. Obviously, the non authorized person who uses it does not survive nor any witnesses close by.

This is to notify earth governments that this device has been obtained by a non governmental entity. This device is potentially as dangerous as a nuclear weapon. Also, this means that a rogue element has likely obtained time travel. This person is not a terrorist so that should be a relief. However, this person does not know what this device is and assumes it is a weapon of some sort but that is not its primary design or purpose.