Stackable effect that increases the chances the next Ultra you defeat or Crucible match you complete will award an Exotic Engram.
― In-game description

Three of Coins is a consumable. When used, it provides a chance that a Guardian will receive an exotic engram after killing an Ultra or completing a Crucible match. If an exotic engram is not dropped, the Guardian can use another Three of Coins, and the chance that the next Ultra killed or Crucible match completed will yield an exotic engram increases.[1]


Player trials show no increase in odds of obtaining an exotic engram when consuming multiple Three of Coins before the buff is consumed; therefore, optimal usage is one Three of Coins per Ultra kill or Crucible match. The following table illustrates an analysis of the odds of obtaining an exotic after consecutive Three of Coins consumptions:[2]

Consecutive uses Odds : 1 1 : Odds
0 0.012 82.4
1 0.019 52.7
2 0.030 33.7
3 0.046 21.5
4 0.073 13.8
5 0.113 8.79
6 0.178 5.62
7 0.278 3.59
8 0.436 2.30
9 0.681 1.47
10 1.07 0.938
11 1.68 0.600
12 2.61 0.383
13 4.08 0.245
14 6.39 0.157
15 9.99 0.100
16 15.64 0.064


Three of Coins can be retrieved from one of the following activities/vendors:

The Taken King source icon The Taken King
This item requires the Taken King expansion.
Xur, Agent of the Nine source icon Xur, Agent of the Nine
Xûr, Agent of the Nine, sometimes sells this item in the Tower.
Nightfall source icon Nightfall
This item can drop from Nightfall activities.


  • Certain ultras, such as Omnigul and the Psion Flayers in the Dust Palace strike, will never drop exotic engrams regardless of whether or not the player has used a Three of Coins.[citation needed]
  • There is a hidden cooldown period after using a Three during which using additional Threes will not increase drop chance in order to prevent exploitation of easily repeatable ultra kills.[3][4] The exact length of the cooldown has not been stated, but it is believed to be between 10 and 15 minutes.[citation needed]


  1. Dague, David. (2015) "Bungie Weekly Update - 09/17/2015". Retrieved February 19, 2016.
  2. Reddit "3oC Statistics, Updated". Retrieved September 18, 2016.
  3. Dague, David. (2015) "Bungie Weekly Update - 09/24/2015". Retrieved February 19, 2016.
  4. Update