History of Weapon crafting

Weapon crafting (in-game "Shaping") launched with The Witch Queen and is done at the Relic in the Enclave on Savathûn's Throne World. A crafted weapon needs a pattern, unlocked by extracting Deepsight Resonance from a set number of the same weapon (for example five extractions). You choose the intrinsic frame, barrel, magazine and two trait perks, optionally a memento, and the weapon levels up through use, unlocking perks up to level 16; Ascendant Alloys enable enhanced perks. Mementos add kill trackers, titles and shaders.