Death's Plague

You conjure a swarming dark vortex of bugs and death at a target. The target must be on the same plane of existence as you, or else the spell automatically fails. The targeted creature must make a CON save and keep repeating it either until the spell is dispelled, or the target dies. On a fail, the target takes 6d8 Slashing and 6d8 Necrotic damage that cannot be reduced in any way they also gain the Blindness condition until the spell ends. On a successful save, they take half damage. The swarm lasts until the targets death or until it is dispelled, it can only be removed by a wish spell and all other spells meant to end it, fail.