JK Rowling has proved it's possible to slay your enemies without ever having to wave a wand and utter the words avada kedavra.
On Tuesday, the author sent out what appeared to be an innocent Valentine's Day message.
More Entertainment News Videos
JK Rowling's Twitter battle with Piers Morgan
In an escalating string of insults, Harry Potter author JK Rowling takes on ultra-conservative TV host Piers Morgan.
Her tweet contained a screenshot of an article listing her many achievements, including the personal wealth she's accumulated over the years thanks to the hugely successful Harry Potter book series and film adaptations.
"Ms Rowling definitely matters," the article purrs. "By encouraging children to read, feel inspired and be creative, she has had a greater impact on the world than most of the other names [on this list of influential celebrities]."
Rowling claimed she's just been sent the article, and wanted to get in touch with the author to thank them personally for Valentine's Day.
"Could the writer let me know who he is?" she asked. "I'd like to thank him."
Just been sent this! Could the writer let me know who he is? I'd love to thank him! #Valentines pic.twitter.com/OQtbxPD6AL
— J.K. Rowling (@jk_rowling) February 14, 2017
Anyone who knows even a smidgen about Rowling would be aware she avoids the limelight like a rogue boggart.
But that didn't stop pro-Trump commentator and JK Rowling hater-in-chief Piers Morgan from taking the bait.
"Priceless #humblebrag BS [bullshit]," Morgan replied. "Nobody plays the celebrity game more abusively or ruthlessly than you, Ms 'Intensely Private Billionaire.'"
Priceless #humblebrag BS. Nobody plays the celebrity game more abusively or ruthlessly than you, Ms 'Intensely Private Billionaire'. https://t.co/5ysnfefa3d
— Piers Morgan (@piersmorgan) February 14, 2017
And that's when Potter fans broke down into howls of laughter, because the screenshot Rowling tweeted out to the world was written by - yep, you guessed it - Morgan himself several years ago.
Look away children, what JK is doing to Piers Morgan is awesome and definitely not pretty. https://t.co/J3cmoqkPrm
— Aaron Idstein (@titularninja) February 14, 2017
lol piers pic.twitter.com/5En6h5LplQ
— helena horton 🐱 (@horton_official) February 14, 2017
@jk_rowling pic.twitter.com/hYbgeGbu9Y
— Kevin Moriarty (@kevinpmoriarty) February 14, 2017
Oh my god. Oh my god. Oh my god. He doesn't realise. This is the best day of my life. pic.twitter.com/fl0lFPHXf5
— Jamie Ross (@JamieRoss7) February 14, 2017
Morgan has, naturally, claimed he knew all along it was his article. "Just surprised I put her as high as 97th," he later tweeted.
The pair have been trading barbs on Twitter for roughly the same length of time as the Wizarding War, but Rowling can definitely chalk the latest exchange as a win in the ongoing battle.