Huitzilopochtli's Sacrificial Bowl

Origin
Huitzilopochtli is the Mesoamerican deity of war, sun, human sacrifice and the patron of the city of Tenochtitlan. He was also the national god of the Aztecs. According to Aztec mythology Huitzilopochtli was said to be in a constant struggle with the darkness and required nourishment in the form of human sacrifices to ensure the sun would survive again. The sacrifices was to protect the Aztec from infinite night. Inside of the Great Temple of Tenochtitlan there is a hidden chamber with a decorative stone box, inside of it is the sacrificial bowl which contains human blood. Tourists used to hear chanting once a year which was believed to be a person with Aztec in their bloodline refilling the bowl with new blood. Agents are required to use Elizabeth Bathory's Bathtub to refill the bowl once a year.

Effects
Must be filled with blood, if it is spilled it will create a cosmic cloud to cover sunlight from reaching Earth. Once filled again the cloud vanishes, damage done remains.

Trivia
Inspiration for [Sunrise] (2003) Season 1/ Episode 43 of the 2003 Twilight Zone reboot. As seen here: Twilight Zone Artifacts