Walnut Bolas

You create a long, vine-like Bolas that lashes out at your command toward a creature in range. Make a ranged spell attack against the target. If the attack hits, the creature takes 1d6 slashing damage, and if the creature is Large or smaller, the vine wraps around the creature; you may choose between, it's movement speed is halved until your next turn or it's next melee attack is made at disadvantage.

At Higher Levels. This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).