It's a cool idea but how would you implement it into the lore of the crucible? The crucible is basically training exercises for guardians, rift itself started as a warlock training exercise in the lore. I like the taken idea but I would find it hard to believe Shaxx would be ok with oryx taking a guardian in the crucible, not to mention it would be difficult to explain how your guardian is magically better at the end of the match. I don't think you can get untaken. It could be a training exercise by Shaxx to test a guardian's survivability against the darkness. I like the idea though, I'm just overthinking the lore aspect lol