"harm wrought" is a correct and usable phrase in written English.
It generally means the damage or misfortune that results from something, usually in a metaphorical sense. For example, you could say, "The harm wrought by their careless decisions would take years to reverse."
Then there is the harm wrought by the tax law.
Brimir and Hulda realize that controlling nature for the benefit of a few has imposed a grave cost on the many, and they set out to reverse the harm wrought by Goodday.
There is not a nation in the world, including the United States, that would not consider the scale of death and destruction that we and the allies have wrought upon Libya as hostilities were such harm wrought upon it.
Will the highly influential but largely silent leadership of New York City's great cultural institutions, long prevailed upon to avoid biting the hand that fed it, now feel free to speak out openly against the harm wrought by Altria (formerly Philip Morris) everywhere it does business?
"The harm wrought by the prohibition of marijuana has been thoroughly researched and documented".
If our politicians expect to maintain the trust of the people they were elected to represent, then they must show that they are serious about protecting them from the harm wrought by coal and gas companies and the climate damage that these companies create.
But once you bother to weigh the arguments -- once you recognize the essential humanity of gay people, and assess the harms wrought by treating them differently and the lack of harm caused by letting them wed -- there's only one right position to take, whatever your feelings may tell you.
Although it may come as a surprise to his detractors, President Trump understands better than anyone the lasting damage wrought by past presidents under the Antiquities Act — and he stands ready to undo the harm brought about by their overreach.
When you think about it, this is a pretty difficult argument to give substance to: How would the harm be wrought, exactly?
Bad was something that was done to us; what was done to others with our approval was good, the harm it wrought a secondary matter.
Toward the end, the letter mentions many individuals by name, some dear friends, others who wrought harm.
