Concealing Mist Jutsu

Kirigakure no Jutsu (Concealing Mist Technique)
Ninjutsu (Suiton) [Water]
Rank: 4 (C-Class);
Range: 0 feet;
Area: Cloud spreads up to 50-feet-radius from the user, 30-ft. high;
Duration: 1 minute/1 extra chakra (doesn't include chakra spent to increase coverage);
Saving Throws: None;
Chakra Resistance: No;
Chakra Cost: 4.

One of Kirigakure no Saizo's original techniques. It is said that this legendary ninja used this technique to infiltrate the castle of a famous feudal lord and kill him, along with his entire army, without ever being detected.

Kirigakure no Jutsu fills a 50-foot radius area with a thick mist; as long as he remains in the mist, the user may increase the area covered by the mist by 20 feet at the cost of one point of chakra. The mist can be dispersed in 5 rounds by a moderate wind (11+ mph), or instantly dispersed by a strong wind (21+ mph) in 1 round.

The fog obscures all sight, including dark-vision, beyond 5 feet. A creature within 5 feet has concealment (attacks have a 20% miss chance). Creatures farther away have total concealment (50% miss chance, and the attacker can’t use sight to locate the target).

Expendable Component: 20 liters of water nearby per 10-ft. square turned to mist.