The campaign is nearing its end, the group is battered and running low on resources but all that's left is one last chamber where the demon lord waits. Stepping into the chamber gives the group the feeling they've stepped into the Nine Hells itself, all is quiet aside from the bubbling and sizzling of the massive magma pool. There are no guards, no furnishings, not even a rudimentary throne carved from the rock. As they are about to give up and leave the ground begins to shake. A low rumbling slowly builds, the edges of the pool ebb as a massive swell builds toward the center. The molten rock gives way slowly as a towering figure rises from the depths and makes its way to the shore.