Board Thread:Destiny Wiki Forum/@comment-5650583-20170429221502/@comment-26355186-20170430211113

The base story is that Xyor the Unwed, a Hive Wizard, corrupted Rezyl by tricking him into grafting cursed Hive bones to his Hand Cannon Rose. He thought they were just a battle trophy, but they ended up twisting Rose into Thorn and Rezyl into everyone's favorite sadistic ex-Guardian murderer. I'd recommend looking at the Ishtar Collective site for more info, the cards are there.