Bramble Binding (2.0)

Brambles burst from your hand, lashing out at a target within range. The target must make a Dexterity saving throw. On failure, they take 4d4 piercing damage and, if the target is Large or smaller, it becomes entangled by brambles. While entangled by brambles, it can't move, but it can free itself as as an action (taking no additional damage) or rip itself free using half of its movement and taking an additional 2d4 piecing damage. On a successful save, they take half as much damage and aren't entangled by brambles.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both the initial damage and the damage taken ripping free of the brambles increases by 1d4 for each  slot level above 1st.