The Collaborative International Dictionary of English v.0.48:
Inciter \In*cit"er\, n. One who, or that which, incites. [1913 Webster]WordNet (r) 3.0 (2006):
inciter n 1: someone who deliberately foments trouble; "she was the instigator of their quarrel" [syn: instigator, provoker, inciter, instigant, firebrand]