Blazing Mist Technique

Kasumi Enbu no Jutsu (Blazing Mist Technique)
Ninjutsu (Katon) [Fire]
Rank: 5 (C-Class);
Area: Cloud spreads 30-feet-radius from the user's location, 10-ft. high;
Duration: Instantaneous;
Saving Throws: None (see text);
Chakra Resistance: No;
Chakra Cost: 5.

This technique doesn't so much create fire as it greatly increase the flame of already existing fire source. Any fire source caught in the area of effect suddenly bursts and expands, burning creatures caught in its radius unless they succeed a Dex save (DC 15) to take only half damage. It will also damage and set unattended objects on fire. See below for the different size of fire source.

• Small (candle, torch): The small fire source expands and burns creatures and objects in a 5-feet radius from its location for 10 points of fire damage.
  
• Medium (campfire, grill): The fire source explodes and burns creatures and objects for 25 point of fire damage in a 10-feet radius of its position.
  
• Large (burning old tree): The fire fills a 15-feet radius burst and burns creatures and objects caught in it for 50 points of fire damage.
  
• Huge (burning house or larger): A large explosion fills a 20-feet radius and burns creatures caught in it for 80 points of fire damage.