farseer ori offered this quest when he hit rank 7. the [item=169904] contained a benthic token (i got [item=169485], but i'd assume it could be any of them), 115 war resources, and 12 Zin'anthid. you regularly get these quests as you rank up your bodyguards. they typically reward things like benthic gear or crafting mats. once you bulk up your buddyguards a bit more you can get a pet, a toy, and a mount!
♦ bladesman inowari
Additional Supplies, rank 2
Reclaimed Treasure, rank 5
[quest=56789], rank 7
Treasure To Find, rank 9
Mysterious Treasure, rank 13
Beauty in the Deeps, rank 20, awards the pet [item=169354]!
♦ farseer ori
The Speaker's Gift, rank 2
The Lambent Lockbox, rank 5
Helpful Provisions, rank 7
The Mystic Chest, rank 9
Naga Treasure, rank 13
Last Heirloom, rank 20, awards the toy [item=170155]!
♦ hunter akana
A Gift From The Clan, rank 2
A Glint in the Darkness, rank 5
[quest=56779], rank 7
Hidden, But Dangerous, rank 9
Treasure In The Deep, rank 13
Wild Tame, rank 20, awards the mount [item=169200]!