Divination Enhancement

This spell categorizes and optimizes the flow of information within your mind. For the duration, your divination spells of 4th level or lower no longer require concentration, and their duration does not count down while this spell lasts. Spells with an instantaneous duration are not affected, and those that provide a single-use bonus end after providing that bonus.

When this spell ends any divination spell you have active that normally requires concentration ends immediately. Those that do not require concentration immediately resume counting down their normal duration.

Adapted from the AD&D 2nd edition book Tome of Magic.