I found a couple of things most likely linked to the exotic quest. There’s a yellow Clovis bray orb just outside the hellmouth. Another yellow orb on the “hidden” platform in asterion abyss. A strange interactive hakke hologram at the end of exodus garden 2A lost sector. I know some of these were already found but I found them myself and wanted to share just in case. It’s also worth noting that the Clovis orbs can be shot but show immune, if a had to guess you have to shoot them with the secret exotic. Happy hunting.