Bypassed the maze with Braccus’ ring. Doubled back to loot, and defeated flaming skeletons. Didn’t have the skills for blood rain, so thought to use character blood to put out the fire on the historian. Characters extinguished the animation of the flame after using teleportation (i.e. flame was no longer visible), but the Historian wouldn’t respond as if he had been doused. Worst of all, Historian was now clicking for 11 damage and eventually he died. No loot on his body, although I assume this is intentional.