The Obsidian Shroud is an endless fabric of polished obsidian that stretches across the cosmic void. Its surface is smooth as glass but deep as space itself, absorbing all surrounding light. When a player takes a bag tag, the Shroud parts like a curtain revealing gold light beneath; when they lose one, the darkness closes in, threaded with gray. The fabric feels like cold silk against the skin and carries the faint scent of starless nights. It tears when bag tags transfer and repairs itself, each repair adding new patterns to its infinite weave.

The Obsidian Shroud determines which players are worthy of cosmic revelation - those who hold bag tags are momentarily unveiled from the shroud, while those without are wrapped tighter in its dark embrace. It records every competitive moment within its dark fibers, creating an eternal tapestry of worthiness observed by the Grays.