This spell creates a wave of magical energy that blinds one or more creatures. It affects the creatures with the lowest hit point totals first, selecting subjects one at a time until the next target would put it over the limit of 200. (Creatures with negative hit points count as having 0 hit points.)
The duration of the spell depends on the total hit points of the affected creatures:
Hit Points Duration ---------- --------
Up to 50 Permanent 51 to 100 1d4+1 minutes 101 to 200 1d4+1 rounds