1. This one is like a volcano. First user channels fire chakra in his foot and stomps on the ground while releasing the chakra. This makes a tunnel. After that he breathes fire into the tunnels which causes stones and other stuff underground to burn and melt. After that he can perform a single hand seal and make all this molten stuff along with fire to erupt beneath the opponent. Pretty useful justu and very difficult to counter. Since you cannot really see whats happening underground unless you are a sensory or a have dojutsu. Plus the molten stuff should make it a little difficult to counter by just normal A-Rank fire counters.
2. Pretty basic technique where user first breathes fire in front of him and than using a gust of wind makes it spread it on the larger area. Simple fire technique but has a benefit of being higher rank and can be pretty handy if you combine it with certain wind jutsus.
3. Strong rank technique. Basically user breathes out a large fireball which travels towards the opponent. As it is near the opponent it bursts in the form of a raging whirlpool like structure and burns around the opponent causing severe burns. Is a stronger jutsu and pretty effective for combos
2. Pretty basic technique where user first breathes fire in front of him and than using a gust of wind makes it spread it on the larger area. Simple fire technique but has a benefit of being higher rank and can be pretty handy if you combine it with certain wind jutsus.
3. Strong rank technique. Basically user breathes out a large fireball which travels towards the opponent. As it is near the opponent it bursts in the form of a raging whirlpool like structure and burns around the opponent causing severe burns. Is a stronger jutsu and pretty effective for combos