Remember that page where Terezi was investigating the murder of her friends and then suddenly, after hearing HONKS, she ceased thinking rationaly and just blamed Vriska while conjuring a ridiculous theory? I just realised. Gamzee used ragy powers. To give her. And idiot ball.

Taking advantage of Terezi’s rage towards Vriska to get a free pass and get the two into a stalemate where one of the two has to Die is most definitely something the Bard of Rage influenced for sure.