[n] someone who deliberately foments trouble; "she was the instigator of their quarrel" [n] a piece of wood that has been burned or is burning
brand, inciter, instigant, instigator, provoker
agent provocateur, agitator, agitprop, beast, beldam, berserk, berserker, bomber, brand, brute, burning ember, butane lighter, catalyst, cigarette lighter, cinder, coal, demagogue, demon, devil, dragon, ember, exciter, fiend, fire-eater, flambeau, flint,