Xur is currently hanging around in Destiny 2, and it’s your opportunity to pick up another Invitation of the Nine. The item costs 9 Legendary Shards and will open up the next step for you in the nine week quest related to The Nine. We covered what you needed to do for week 1 in a previous article, here we’re going to cover the quest steps for Invitation of the Nine week 2.
Source: N4G PC Invitation Of The Nine Week 2