Taste of Death

You magically create a piece of food or a dish (up to 5lbs.) from raw ingredients and spike it with negative energy. The food looks, smells, and tastes delicious. When eaten, a delayed but sudden necrosis explodes within the body. One minute after a creature eats the food created by this spell, it must make a Constitution saving throw. On a failure, the creature takes 8d6 necrotic damage. On a success, the creature takes half damage. Undead and constructs are immune to this spell. If a creature loses half or more of its maximum hit points from this spell, it must roll a d10 to determine how it's body reacts. 

• On a 1 or 2, the creature's limbs shrink and blacken as the necrosis eats away at the muscle. It's speed is cut in half and has disadvantage on attack rolls.
• On a 3 or 4, the creature's face begins to rot and black, spiderweb-like veins intrude on milky white eyes. The creature is blinded and has disadvantage on all Charisma ability checks.
• On a 5, the rot spreads rapidly to the creature's brain, culling it of intellect. The creature has disadvantage on Intelligence saving throws and ability checks.
• On a 6, the necrosis spreads to the surface and creates greenish-black pustules on the skin that burst outward, spraying a toxic ichor all directions. The creature is poisoned and all creatures within 5 feet of it take 4d6 poison damage.
• On a 7, the skin becomes deathly pale with tangled, varicose veins and every prick wracks the creature with near mind-rending pain. The creature becomes vulnerable to all damage, except psychic damage.
• On an 8, the shifting visions and demented whispers drive the creature mad as the rot attacks its psyche. The creature has disadvantage on Wisdom saving throws and gains a short-term madness and an indefinite madness. The DM may determine the nature of these by rolling on the Madness tables in the Dungeon Master's Guide on pg. 259-260. 
• On a 9, the heart and lungs atrophy; breathing labored and vitality a shadow of its former self. The creature's maximum hit points are reduced by the amount of damage taken from this spell and has disadvantage on Constitution saving throws. 
• On a 10, the body cannot handle the sudden shock to its various systems and begins to crumble in more ways than one. When you roll a 10, roll on this table again twice, ignoring rolls of 10 again and duplicate rolls.
  
  

The effects last for 7 days. The effects caused by this spell can be removed, one at a time, by casting Greater Restoration on the creature. If the food made by this spell is not consumed within one hour of casting this spell, it dissolves into an acrid smelling black puddle.

At Higher Levels. When you cast this spell using a spell slot of 6th or higher, the damage increases by 2d6 and the duration of the effects are extended by 7 days. When you use a 9th level spell slot to cast this spell, the effects of the spell are permanent till dispelled.

"Death comes in many flavors."    - Unknown