School: Chronomancy (Transmutation)
(Intended for use with the Chronomancer subclass)
Duration: 12 hours / level up to 7 days, or until next meal

Slow Metabolism:
When cast on a creature, this spell can drastically increase the length of time between required meals. The recipient only requires food and drink once every 12 hours per level, up to 7 days. Also, if the creature has been poisoned, this spell slows the onset of damage and effect by one hour per level (assuming the full effect of the poison has not already take place), but a cure still needs to be found.

The material component is a small wafer that the recipient consumes.

Haste Metabolism:
The reverse of the spell requires an attack roll. It quickly weakens a creature from lack of food and water. If a Constitution save is failed, the target's Constitution and Strength are each reduced by 1 point for every two levels of the caster (minimum of 1), until the victim next eats a full meal. This does not kill the victim unless the Hit Dice modifier drops it below 0 current hit points.

The material component is a piece of spoiled food that is hurled at the target.

Based on the 2e AD&D spell Accelerate Metabolism.