Vile Song

You animate a dead creature that is not an undead or construct. To do so you must spend 24 hours performing a ritual with the creature you are raising. This ritual involves heavy dedication and cannot be interrupted by anything other than eating and drinking, this includes sleep. The ritual will consume the material components on completion and the creature will be completely under your control. The creature acts on its own initiative. After completing the ritual the caster gains 3 levels of exhaustion.

Casting this spell on another creature frees the other creature from your grasp but the creature remains undead. The creature will then act as a normal undead. The creature only obeys your commands to the best of its capabilities. To raise a creature the creatures CR or level must be lower than or equal to half your spell casting level rounded down, to a maximum of 10. 

The creature has the same statistics as it’s normal form it had in life unless there is an undead variant of the creature. The creature cannot cast spells from any class levels or use innate spell casting of any kind, or attune to any magical equipment. The creature is considered undead and does not require food, air, or sleep. The creature is immune to being frightened, poisoned, or charmed.

The creature cannot heal from any healing Magics or rests under this effect. To regain the creatures health an hour must be spent with the creature. The creature regains 1 hit point for every 10 gold applied to the creature during this hour. The gold is consumed at the end of this hour. Upon the death of a creature that at any point was affected by this spell it bursts into a mix of pieces of the original corpse and liquid gold. The gold immediately corrodes and is worthless. Once the creature dies it cannot be risen in anyway as its soul is divided after the creature is killed. 

Casting the spell at higher levels does nothing for the Creature. However the level the spell was casted at is the level needed for the spell to be dispelled. Meaning a 6th level Vile Song against a 7th level dispel magic would dispel the grasp you have on the creature. However Vile Song cast at 9th level can only be dispelled by a wish spell.

When the Caster of Vial Song dies (not unconscious) the creature is free to act on its own will until the caster returns to life under its own mind.

Casting the spell at 9th level also changes the limit to the level or Challenge Rating of the creature. When cast at 9th level the maximum level or CR of the creature increases to 3/4ths your spellcaster level rounded down.