Circle of Binding

You conjure a 30ft radius binding sigil on the ground at a point you can see within 150ft. Creatures within the sigil must make a strength saving throw taking 10d6 necrotic damage or half as much on a successful one. One a failed save creatures become restrained by void tendrils. Restrained creatures can attempt to break free by remaking the saving throw at the start of each of their subsequent turns.

 **At Higher Levels.** When you cast this spell using a spell slot of 7th level or higher, the damage increases by 2d6 for each slot level above 6th.