Blood Curse of Writhing Tendrils

Prerequisite: 15th level Order of the Warped One

As a bonus action, you curse the blood of a creature you can see within 30 feet to writhe beneath its skin, like foul tendrils. The creature must make a Constitution saving throw. On a failed save, it takes 1d10 necrotic damage and is poisoned, as its body is assaulted by the experience. The target can remake the save at the end of its turn. On a success, the curse ends.

Amplify. The cursed creature takes an additional 4d6 psychic damage, and takes this damage again each time it fails the constitution saving throw.