Nauvoo Temple Sunstone

Origin
The Nauvoo Temple was the second temple built by the Mormons that was eventually toppled by a fire and tornado. The Mormons re-bought the land the temple once stood on and built a replica temple on the site.

Only though three sunstones are known to the public to have survived the fire, this fourth one also made it out unscathed and will remain in the Warehouse.

Effects
When exposed to sunlight, the sunstone will burst into flames. It will keep burning until sundown, with neutralizer only working for an hour at most.