Cosmic Rope

You create a glowing rope. It is 20ft long and sheds dim light for 5ft around it. When it touches pure skin it deals 1d10 damage. The damage type is determined by your alignment, if you're evil, it deals necrotic, if you are neutral, you deal force, if you are lawful it deals radiant. The rope can move up to 30ft a turn and you can make a single knot (that you can make yourself) as a bonus action. Your DM may choose to make more complex knots have a longer time to make.
At higher levels: The damage increases by 1d10 for every level spell slot it uses. Level 1 spell slot: 1d10, Level 2: 2d10, Level 3: 3d10 and so on