So in my heavily hombrewed Avernus campaign one of my PCs was sent back to the material plane. He was about to fall into the river styx when a pc thought of banishing him to save him (forgetting he wasn’t native to Avernus) the banished pc then told the main factions of Faerun what was happening in the nine hells. The pc then decided his character would not want to return to Avernus (which was a very in character decision)

The primary factions (lords alliance, Harpers, Order of the Gauntlet, Emerald Enclave, Zhentarim) then assembles a strike teams including that players new pc a brutish enforcer to better asses the Avernus situation. I plan on having most of the strike team die rather quickly. But I thought it would be fun to have this new Zhentarim pc have a secondary objective (steal a powerful magic item, extract/kill a target, or something to that effect) however I cannot think of anything so I wanted to see if anyone here had any ideas.

Apologies for formatting I’m on mobile

Edit: I should specify I don’t want something that goes directly against the party. While it could make sense I don’t like pvp at my table