Evocation [Water]
Level: Druid 8
Components: V, S, DF
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Area: 30-ft.-radius burst
Duration: Instantaneous
Saving Throw: Fortitude partial; see text
Spell Resistance: Yes
As you complete the spell, a surging, frothing wave of thick, red seawater washes over everything in the area.
All creatures in the area of a red tide spell are immediately knocked prone and must make a Fortitude saving throw.
A creature that makes its Fortitude save against a red tide is sickened for 1 minute. A creature that fails this saving throw is nauseated for 1 minute, and it takes 2d6 points of Strength damage. After 1 minute, the nausea ends but the creature must make a second Fortitude saving throw or take an additional 2d6 points of Strength damage. Creatures that are immune to poison are immune to these effects of a red tide.
Creatures with the fire subtype take 1d6 points of damage per caster level (maximum 20d6), or half with a successful Reflex save.
The tainted water evoked by this spell vanishes almost immediately, and any objects or creatures in the area do not emerge wet.
Source: Spell Compendium, page 170.