Noun
One who instigates or incites.
Source: Webster's dictionaryI am an instigator of the national energies. A.C. Cuza
Every instigator or madman, who will dare to raise his hand against the government, let him be sure that the government will chop it off. Recep Tayyip Erdoğan
Kickstarter isn't a profit center, it's an organizer and an instigator. Seth Godin
If one reads a newspaper only for information, one does not learn the truth, not even the truth about the paper. The truth is that the newspaper is not a statement of contents but the contents themselves and more than that, it is an instigator. Karl Kraus
she was the instigator of their quarrel Source: Internet
Despite the absences, the Crew were the decidedly better side and Zelarayán was the instigator. Source: Internet