Death's grasp

You send negative energy coursing through a creature that you can see within range slowly eating at its soul. The target must make a Constitution saving throw. It takes 9d8 + 50 necrotic damage on a failed save, or half as much damage on a successful one.

upon a failed save every day at noon or the creature's location's equivalent it makes another Constitution saving throw taking 9d8 + 50 necrotic damage on a failed save, or half as much damage on a successful one. This effect can be removed by dispel magic.

Any creature killed while under the effects of this spell rises at the start of your next turn as a zombie version of that creature (if it is a construct it is destroyed) (if it is a elemental it becomes and avatar of death). this new creature is permanently under the casters command, following your verbal orders to the best of its ability. if the target is on a different plane from the caster on death, it rises on the plane the caster is on 1 mile away from the caster. if the target rises more than 100 ft from the caster the target will attempt to get to the casters position, when going to the caster, the zombie will avoid creatures and objects of certain destruction (I.e. orb of destruction) but will not avoid objects or creatures that will harm them (I.e. bonfire or pack of goblins). this only occurs when the creature initially  rises and can be commanded to take actions outside 100 ft from the caster