Conflagration is a trap in The Witcher 2: Assassins of Kings.
Geralt starts the game with three conflagration traps. Thereafter, they must be crafted, purchased or looted. In Chapter I, they are sold by Cedric. In Chapter II, they can be purchased from either Isidor Kay in the Kaedweni camp or Earso in Vergen, and in Chapter III, Earso is also available in Loc Muinne.