Erstam's Surprise

Erstam's Surprise is a random-effects spell.

Spell Description
The namesake of its creator, Erstam's Surprise conjures dark clouds that radiate from the caster and have one of several different effects that are detrimental to enemies, including those of the spells Sleep, Poison and Cause Fear. The casting mage has no control over what exact effect is produced in the clouds. Erstam himself simply calls the spell Surprise, but notes that others have added his name to its designation.

Trivia

 * The spell was originally called Smoke Field, before the name got changed during development. The original name did describe the spell effects quite well.