This spell aggravates the natural wave action on a beach so that higher and higher waves rush ashore until a violent crashing surf rolls in. It can catch people unaware or hinder boats moving to and from the beach. At its most violent, surf can damage or destroy beachfront structures and docks. Once the wave action begins, the spell-caster himself must move away from the surf, for the longer the spell lasts, the more violent the resulting wave action will be. For its first turn of duration, the surf rushes up to its normal high-water mark. For every turn past that, the surf advances a further 10 yards inland. Surf raised by a 6th level sea priest, for instance, will wet the shore a distance of 60 yards, from the normal high-water mark.
Notes: Uncommon for Sea priests; otherwise, very rare. (Updated from Dragon Magazine.)