So today during the thorn version of summoning pits, couldn't finish, I killed a thrall and got a legendary endgram. I was so happen. However, it was a class item endgram. Later today, I went to decode it on my Titan and got the Mark of Contention. The description read: "The mighty Thalor was invincible in the Crucible- until Dregon Yor, and his thorn." So this brought up so many questions in my head. Who was Thalor and what weapon did he use? Was there a showdown between Thalor and Dregon? Where both guardians involve in the battle of twilight gap? Are they both living in the lore? Does anyone else have this mark? Also, I have many more questions. If anyone could answer them it would be great. Lastly, share your thoughts too!!