Drenal's Stone Flame

The caster points to an open flame no larger than a torch. The flame turns into a brighter-glowing stone that is cool to the touch and can be picked up and carried without harm. It continues to shed as much as it did per-transmutation.

When the spell expires, the stone reverts to normal flame and will burn whatever it is touch. If the stone is shattered, the flame explodes out of it in a 5-foot range. Either of these will deal 1d6 fire damage.