Hasten Growth

This can be cast once per week upon any animal, including a giant variety. If a saving throw vs. spell is failed, the creature ages by one month instead of one week, undergoing any physical changes associated with the normal passage of time. Casting this spell more than once per week on the same animal may afflict it with magic-induced changes, a degenerative disease, system shock, genetic damage, or other penalties at the DM's option. The spell is most often used to accelerate maturation during breeding experiments.

The material components are: a pinch of spinach and a spoonful of cod liver oil.

Notes: Very rare spell. (Updated from Imagine Magazine.)