Sagacity

In the game: help sagacity

Raise a target's wisdom (or lower it: foolishness).

Syntax: cast sagacity [target]
Syntax: cast foolishness <target>

This spell increases your wisdom for its duration.

Details

With the Alternate rune it becomes Foolishness: on a failed save the target loses Wisdom.

The game also finds it under: sagacity, foolishness.