Original Player Handbook Description:
A 7th level mage spell, enabling the caster to wish for something. The spell is limited in that it will not change major realities and it will not bring wealth or experience for the asking. Effectively, the spell has the ability to reproduce the effects of a lot of other spells: restoring hit points, reducing hit probabilities, adjusting a magical effect, charming a creature, obtaining information ~ and for all these relatively minor effects for a 7th level spell, there is the threat that "Greedy desire will usually end in disaster for the wisher."
On the whole, a poorly written spell that clearly seeks to limit the player's ability to use it for any unique purpose. Needs improvement. See Wish (spell).