EX. at Level 15 Devrim Kay you can purchase an upgrade worth 300 Dusklight Shards (Sounds pricey on paper), and a couple thousand Glimmer to give you a permanent buff that rewards a chance to gain Dusklight Shards on Precision Kills on the EDZ
Gives them meaning that could be neato burrito
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It may be a hint for future update to vendors, it is something people are liking in this format, so make the rest of the NPCs have this system, but with new loot, and more enjoyable grind!