This new system provides an extra level of depth to the decision-making process as you flesh out your equipment collection in the end-game. In the original Destiny, Xur was all about the Strange Coins, but this currency is gone altogether in the sequel, and it's those Legendary Shards you want to be farming at every opportunity. Not only are they used to enhance weapons and armour, increasing the Power level of these items in the process, they're also used to buy the tastiest gear made available by Xur, who pops up somewhere in the world every week. Legendary Shards are one of the most important currencies you can get your hands on when you're deep in the thick of Destiny 2's end-game.
Legendary Shards guide explains how to farm Destiny 2's premium currency, and what you should spend these precious items on.