(Metamagic)
You can call upon murky sediments in the water to transform a mist spell underwater.
Benefit
You can apply
Murky Spell only to a mist or fog spell that normally doesn't work underwater, such as cloudkill, fog cloud, mind fog, obscuring mist, or solid fog. When cast underwater, a
Murky Spell clouds the water with sediments, producing roughly the same effects as the normal spell would above water except as follows. Due to the dilution, a
Murky Spell has only one-tenth of the duration of a normal spell (generally 1 minute per level, though mind fog lasts 3 minutes), but this reduction doesn't affect the duration of secondary effects like mind fog's mental penalties. Abilities that see through mist and fog can't see through a
Murky Spell unless they also specifically see through murky water (like the mistsight universal monster rule). Instead of wind, currents can disperse a
Murky Spell; any current with a speed of at least 10 feet disperses a
Murky Spell in 1 round. A
Murky Spell has no effect above the water. A
Murky Spell uses up a slot the same spell level as the spell's actual level.