Dry Ether is an rare potion. For it give uses back your magic slots. For there is no need to rest if you have one of these. For example, mages they do not have to rememorize his spells for the day , for it is instantly back, as if he ad not cast them at all. It cost 800 gil(gold).

The potion is said to be a gift from the gods. But it was a gift from on god (Mystra) to her disciple. For when in an emergency, are you drink this if you are low on spells in battle and it will replenish you.