Death Thorn

When you clutch the artifact, it responds to your call. A myriad of vines erupts from the ground at your feet, spreading in every direction, preventing all movement towards you. The vines that surround you are deadly, whipping and slashing at any creature within range to guard you. Even the slightest cut seems to result in death, as this impenetrable wall of tough, bristling vines covered in needle-sharp thorns.

The eruption of thorns blocks line of sight, and when the ring of dangerous thorns appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature will die if they have less than a maximum of 100 hit points. On a successful save, the creature escapes the murderous whips, finding themselves thirty feet from you. If a creature makes an attempt to enter the vines, they must roll a Dexterity saving throw for every five feet of movement towards you, and on any fail, will die.

If a creature has more than 100 hit points, they will take 4d6 slashing damage and 4d6 piercing damage for every failed save, and will be shoved back out of the crown of thorns. On a successful save, the target will take half as much damage, and may continue through the thorns.