Exotic vendor Xur is currently on Titan in Bungie’s Destiny 2. You can find his suite of Exotic wares over there until the weekly reset. Granted, he doesn’t have the most amazing selection of Exotics but who does these days?
This week’s Exotic gear includes Eye of Another World (Warlock helm), Hallowfire Heart (Titan chest) and Celestial Nighthawk (Hunter helm) for 23 Legendary Shards each. Hallowfire Heart is pretty decent if you’re willing to not use Hammer of Sol for the sake of faster grenade and ability recharge. Celestial Nighthawk is excellent for Gunslinger Hunters to tear down bosses. Eye of Another World is…a thing but you’re better off using something else.
The Exotic weapon Prometheus Lens, costing 29 Legendary Shards, is actually a good Trace Rifle after the recent adjustments. It’s never going to be the Crucible melting tool it once was but for PvE purpose, it’s decent to clear out trash mobs.