This item takes the form of a golden thread of magic, interwoven into a red thread of fate. A creature in the possession of this weave can change one thing about any spell or ability, like its effective range, damage type, creatures it affects, the saving roll, wether something requires concentration, et cetera. Your DM decides what is reasonable. After using this item the threads vanish from your inventory. At the end of the next use of the changed ability or spell, it returns to normal.