Blood Wound

You attempt to boil the blood of creatures around you to impair their ability to move.
Choose up to four creatures you can see within range. Each creature must make a Constitution saving throw. On a failed save, the targets take 8d8 necrotic damage and are stunned until the end of your next turn. On a successful save, they take half as much damage and are not stunned.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the number of creatures you can choose increases by one for each slot level above 7th.