Tangleblade

You brandish the weapon used in the spell's casting and make a melee attack with it against one creature within range. On a hit, the target suffers the weapon attack's normal effects, and tangling thorns erupt from the target's location. The target's speed is halved until the end of its next turn.

This spell's damage increases when you reach certain levels. At 5th level, the melee attack deals an extra 1d8 piercing damage to the target on a hit. This damage roll is increased by 1d8 at 11th level (2d8) and again at 17th level (3d8).