This 9th-level enchantment spell inflicts debilitating psychic agony on a creature the caster can see within range. The target must make a Constitution saving throw. On a failed save, it takes 1d10 necrotic damage. If the target takes damage from this spell, it is also marked with excruciating pain for the duration of the spell and makes subsequent saving throws against this spell at disadvantage. Whenever the marked creature takes damage, it takes an additional 1d10 necrotic damage. At higher levels, the initial damage increases by 1d10 for each spell slot level above 9th.
As a high-level spell, this potent incantation offers a significant tactical advantage in combat. Its ability to inflict ongoing damage and impose disadvantage on further saving throws can cripple even powerful adversaries. The additional damage triggered by any source, not just the spell itself, makes it especially effective against enemies under constant assault. This spell’s utility is further enhanced by its long range. Its inclusion in the spell lists of classes like bard, cleric, sorcerer, and warlock speaks to its versatility and power.