Poison Mist Technique

Dokukiri no Jutsu (Poison Mist Technique)
Ninjutsu [Poison]
Rank: 6 (B-Class);
Range: 10 feet;
Effect: Cloud spread 15-feet wide, 10 feet high (see text);
Duration: Instantaneous (see text);
Saving Throws: Fortitude negate (see text);
Chakra Resistance: Yes;
Chakra Cost: 6.

By gathering Chakra in his lungs, he is able to transform the air in them into a lethal poison, which he will breath out in a purple gas. On the post that it is used, Dokukiri no Jutsu fills a 15-foot wide by 10 foot tall space with a poisonous gas. On the following post, it fills a 20-foot wide by 20 foot tall space, and on the third post it fills a 30-foot by 30-foot space. It disperses after 5 posts, though a moderate wind (11+ mph) disperses the smoke in 3 posts and a strong wind (21+ mph) disperses it in 1 post. A character caught in the
poisonous cloud makes a Fortitude save against poison (Primary and Secondary damage 50 Con both). Those who succeed at their saves but remain in the cloud must continue to save each post. A gas mask renders the target immune to the effects. A wet cloth held over the eyes, nose, and mouth provides a +2 bonus on the Fortitude save.