If only every day RNG was this kind to me... First Run: Got an Exotic Engram from each Boss. Got the Dregs Promise when I went to Orbit screen. Total of 4 Exotics Second Run: Got an Exotic Engram from the 1st Boss, and a Double Exotic Engram drop from the last Boss. Total of 3 Exotics Third Run: Got an Exotic Engram from the Second and Third Boss. Got The QB Bow on Orbit Screen. Total of 3 Exotics Picked up a few Legendary Engrams along the way. Goes to the Reef to cash in the Engrams. To my surprise, 1 of the legendary engrams turned into a 300 Tarantella. (First for me.) 1 Exotic So, a total of 11 Exotics from 3 Runs of Challenge of Elders. All the people who say there's a 15-20 minute cool down on the use of 3oC please come forward.