in this video I’ll be giving you the best guide to unlocking and upgrading the void SL Raven sword in the new Call of Duty Black Ops 6 zombies map Citadel de Moes also called the Raven’s Shadow this sword represents the dark or void element before you can even begin upgrading this you’ll have to first get a stamp from killing a night zombie these spawn every so often after round 10 it’s completely random when they spawn after round 10 but you just have to kill them and pick up the stamp next tak