Meh I was thinking that since you wasted one of the blades to deflect the kunai the remaining blades would be weaker. So for example if you exhaled four blades for 80 damage, each blade would have 20 damage. Since the first blade wasn't aimed at me, I would ignore it, and send three fireballs at the three remaining blades. So three fireballs for 60 damage is 20 damage per fire ball vs. 20 damage per blade. But its my fault for not explaining it better. And I suppose I should have read the description, though it may be wrong.
I land and watch as the wave of water is created and quickly turn my skin black so it takes on the same qualities as iron. This allows me to withstand the wave as it forms and then weighs me down in the water so when the dome forms I'm still standing in my same place. With the dome of water around me I then quickly release earth chakra from my body that instantly begins to petrify the water dome around me, spreading throughout the water and eventually petrifying you along with it. The petrified water crumbles away and I I merge with the stone and make my way to the surface.
(Doton: Domu) – Earth Release: Iron Skin Technique
Rank: B
Type: Supplementary
Range: Short
Chakra cost: 20
Damage points: N/A (+10 to physical attacks)
Description: After performing a single hand seal the user will channel their chakra throughout their entire body, which then hardens their skin to a steel-like quality. This increases their defensive power to the utmost limits. The user’s skin also becomes much darker, an almost black colour. The destructive power of physical attacks is increased, making this a great, all purpose technique. But this technique when activated leaves the user vulnerable to lightning based techniques.
(Doton: Kajūgan no Jutsu): Earth Style: Aggravated Rock Technique
Rank: S rank
Type: Offensive/Defensive
Range: short
Chakra cost: 40
Damage points: 80
Description: By performing the needed hand seal the user will release a body of earth that will allow the user to petrify anything that comes into contact with him.
Note: The target stays petrified for 1 turn.
(Doton: Iwagakure no Jutsu) - Earth Style: Hidden in Stones Jutsu
Rank: B
Type: Defence/Supplementary
Range: Long
Chakra Cost: 30
Damage Points: N/A
Description: This technique is similar to the Universal Assimilation Technique. It allows the user to move in and out of rock and earth. This jutsu can be used to avoid certain earth techniques.