A mighty fir of intemperate disposition drops only five cones per year. Each of these contains a pawn of Ignem vis. They are easy enough to collect, but each cone is extremely flammable, even two days after it falls to the earth - so much so that any spark (or even close proximity) to a source of flame will cause it to burst explosively, doing a stress die (no botch) +5 damage to anyone close enough to touch it, and setting fire to any flammable objects in that area.