Description
As part of casting this spell, you must expend four Hit Point Dice or the spell automatically fails. A crimson pillar erupts from the ground in a 20-foot-radius, 100-foot-high Cylinder centered on a point within range. Each creature within the Cylinder makes a Constitution saving throw.
On a failed save, the creature takes Necrotic damage equal to a roll of the Hit Point Dice expended on the spell plus your spellcasting ability modifier. On a successful save, the creature takes half as much damage.
For each creature that fails the saving throw against this spell, you gain 10 Temporary Hit Points.