Cone of Force

A wave of force erupts from your hands. Each creature in a 30-foot cone must make a Strength saving throw. A creature takes 8d6 force damage and its speed becomes 0 until the start of your next turn on a failed save, or half as much damage and its speed isn't reduced on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d6 for each slot level above 4th.