Bramble Binding

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