Superblack

Superblack is a legendary shader.

Source

 * 1) During the Festival of the Lost 2016 quest Sweet Memories, Eris Morn will give a Tiny Box of Raisins.
 * 2) Take the Tiny Box of Raisins and 25 Motes of Light to The Speaker to obtain Ascendant Raisins.
 * 3) Take the Ascendant Raisins to Commander Zavala to obtain a Salted Sweet.
 * 4) Take the Salted Sweet to Master Rahool to obtain a Winged Chew.
 * 5) Take the Winged Chew to Amanda Holliday to obtain Splice Drops.
 * 6) Take the Splice Drops to Cayde-6 to obtain Unchocolate.
 * 7) Take the Unchocolate to Eris Morn to obtain a Bag of Treats, which contains the Superblack shader and a Piece of Celery.