Along with fire, water is a prominent and serious threat to a magic-user's precious collection of tomes, codices, enchiridia, and scrolls. Thus the following spell:
Proof Against Water
Spell Class: Magic-user
Spell Level: 3
Duration: 1 day per level of the caster upon exposure (also see below)
This spell provides total protection from water for objects that would ordinarily be susceptible to damage from exposure to liquids, e.g. books, scrolls, certain perishable foods, etc. The amount of material that may be so protected is equal in mass to one heavy book per level of the caster. This spell also provides limited protection from water-based attacks (such as by water elementals), immersion in enchanted water, and magical or otherwise unusual precipitation. Any object protected by proof against water is entitled to a +2 bonus to saving throws made versus the appropriate magical water-based attack or threat. Any such saving throw is made as if by a magic-user of the same level as the caster who originally cast the spell at the time the object received its protection. A successful save means no damage was sustained by the object. The spell remains dormant until it is activated by exposure to destructive moisture, water, or water-like liquids. Once activated, the protection lasts for one day per level of the caster or until three saving throws have been rolled (whichever comes first).