As opposed to a Starving Artist who is dying for their art, someone else is dying by their art. The Art Attacker is a character who uses their art as a weapon. This could be paint, puppetry, music, video, etc.
Supertrope to Musical Assassin, Paper Master, etc. Those examples should be listed on their own pages. Art Initiates Life is also strongly related.
The attacker can be, but is not [...] [tvtropes.org]