1st Rank Demonic Surge
As part of an Attack action, you can choose to forgo one of your attacks to cause the ground within 10 feet of you to become polluted with demonic ichor. The area is corrupted for the next minute, during which time it is difficult terrain for creatures other than you. As an action, you can cause any number of 5-foot-by-5-foot square areas covered in this ichor to burst with demonic rot, which clears that area of the ichor. Any creature standing in the burst must make a Constitution saving throw, taking 3d10 necrotic damage on a failed save, or half as much on a successful one.