Curse of Ravenous Hunger

This spell curses a creature on the same plane of existence as you with painful and unending starvation. The target must make a Constitution saving throw against the spell’s DC, which is modified by the Curse Strength Table. On a successful save, the target becomes aware that somebody attempted to curse them. On a failed save, the target becomes cursed and is unaware of this. Upon the completion of this curse’s triggering event, the target automatically advances to stage 1 of this curse.

Triggering event. While eating their next meal, the target bites their tongue and their mouth fills with blood.

Stage 1. The cursed creature is gripped with an insatiable appetite.

Stage 2. The cursed creature becomes compelled to eat inappropriate items such as coins, flowers, glass, dirt. Additionally, the cursed creature has disadvantage on Constitution saving throws.

Stage 3. The cursed creature becomes ravenous and is compelled to consume the flesh of humanoids. No other food will satiate its starvation. The cursed creature’s Constitution score becomes 6, unless it was already lower.

Culmination. Upon failing the final escalation check, the cursed creature twists into a deformed figure and becomes a Bloated Gastromorph. If the creature is a player character, they become an NPC under the GM’s control.