Back in MC:SM, when the wither storm died, it fell apart in chunks. My idea is to add this to the mod. The chunks could do damage on impact, or maybe not. When they hit the ground, they turn into blocks, and could be harvested.

Also, blocks placed in the bowels vanish when the wither storm dies. Maybe some of these chunks could contain certain manually placed blocks, like tile entities and valuable blocks.

Wait, this was already confirmed. Sorry!