Inkwell

The mutant can spit out a cloud of black, oily smoke around her, effectively blinding everyone within.
Type: Minor positive.
Effect: It takes 2 acts to activate this ability. The cloud spat out by the mutant instantly engulfs everything around her within a radius of 25 feet, and remains in effect for 1d6+1 rounds, after which it disappears almost instantly. The cloud blocks all light in its confines, granting the mutant (and everyone else in the cloud) total concealment; all attacks suffer a 50% miss chance, and the attacker must guess at his target’s location to even make an attack. Light-intensifying methods of darkvision don’t work, since there is no light to intensify.
The mutant must wait a minimum of 2d6 rounds between each use of this ability. Using this ability in an area where there is already an inkwell in effect has no additional effect. The two clouds simply overlap.
Biotech: Implant, Graft.