For other items called "Light Unknown", see "Light Unknown".
The bond is signified and signifier, source and focus. Do not seek closure. Let the mystery unfold you.
― In-game description

"Light Unknown" is a basic bond. It can also be transferred between characters using the Vault. "Light Unknown" can be dismantled to generate upgrade materials.


"Light Unknown" can be retrieved from one of the following activities/vendors:

Quest source icon Quest
This item can drop as a Quest reward.
Strike source icon Strike
This item can drop as a Strike reward. Exotic items can only drop from the most challenging Strike playlist.