I have learned all steel jutsus on NB's jutsu list beside learning steel customs made other members and creating my own set of steel based custom jutsu.. I also created my own fighting style that depends mainly on steel release.
My favorite creation: (Kōton: Harinezumi) - Steel Release: Hedgehog
Type: Offensive
Rank: B-Rank
Range: Short-Mid Range
Chakra: 20 Chakra (+5 for shooting the needles and aiming them)
Damage: 40 Damage
Description: The user will first do one handseal (Bird) and then, by using the Kōton chakra the user will make a lot of steel needles to emerge from his body according to his/her requirements. the user can shoot the needles from his body and guide them towards the target by using chakra making evading from the needles very hard. the needles are 7 centimeters long and they're very hard and able to penetrate through a steel shield of 3 centimeters thickness
note: only Pain... can teach it
it allows me to create countless number of steel needle from any part of my body, making me able to turn my whole body to urchin if I want to with just one handseal..
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in case you wanted me to perform a combo using steel and I misunderstood:
I perform the bird handseal, making a wall of steel to emerge from the ground 2 meters behind the opponent and once the wall started emerging, I performed other single handseal followed by a clap making 4 shackles of steel to erupt from the wall and pull my opponent back to it. as the opponent was being pulled by the shackles towards the wall, I performed a single handseal and covered my whole body with steel needles becoming a urchin, and by using my chakra while spinning rapidly in my place, I release all the needles from my body making a needle barrage like Amegakure's umbrella's one and directing all the needles to cover the opponent's vital points to kill him.
(Kōton: Uroku Hei ) Steel Release: Scaled Wall
Rank: B
Type: Deffense
Range: Short
Chakra Cost: 20
Damage Points: N/A
Description: After 1 handseal (Bird), the user is able to rise a large wall of plated black steel to protect from incoming attacks.
(Kōton: Kase ) Steel Release: Shackles
Rank: C
Type: Offensive/Supplementary
Range: Short-Mid
Chakra Cost: 15
Damage Points: 30
Description: The user does 2 handseals (Bird+Ram) focusing chakra beneath the opponent, shaping the ground into several (up to 5) shackles that shoot up to grab the enemy. The shackles are linked to chains that remain connected to the ground. Once they grab the opponent, the user can clap his hands, forcefully pulling the shackles and chains to the ground, effectively pinning the opponent to the ground, restrained by the steel chains.
(Kōton: Harinezumi) - Steel Release: Hedgehog
Type: Offensive
Rank: B-Rank
Range: Short-Mid Range
Chakra: 20 Chakra (+5 for shooting the needles and aiming them)
Damage: 40 Damage
Description: The user will first do one handseal (Bird) and then, by using the Kōton chakra the user will make a lot of steel needles to emerge from his body according to his/her requirements. the user can shoot the needles from his body and guide them towards the target by using chakra making evading from the needles very hard. the needles are 7 centimeters long and they're very hard and able to penetrate through a steel shield of 3 centimeters thickness
note: only Pain... can teach it