Inky Cloud

(Spell Compendium, page 123, DnD 3.5)

Conjuration (Creation)

Level: ; Cleric 2; Sorcerer/Wizard 2
Components: V, S, M
Casting Time: 1 standard action
Range: 30 ft.
Area: 30-ft.-radius spread centered on you
Duration: 10 minutes/level
Saving Throw: None
Spell Resistance: No

Black bubbles of ink boil up from the vial in your hand and quickly spread to fill all the water around you with darkness, blocking your vision.

You create an inky cloud that billows out from your location. The cloud obscures all sight, including darkvision, beyond 5 feet. A creature within 5 feet has concealment. Creatures farther away have total concealment.
A moderate current disperses the cloud in 4 rounds; a strong current disperses the cloud in 1 round. This spell functions only underwater.

Material Component: A small vial containing the ink of a squid or octopus.