Well he fought in Twilight Gap with lord Salad head and Shaxx but isn't known for anything else. He did his job and defended.. Yea!! And what failed plans have warlocks come up with? And you are showing your titan mental capacity. Osiris was not in the original Crota end raid team here is a list for reference. https://www.bungie.net/en/Forum/Post/88690426/0/0