Sorry my training is
halfway C rank water
Starting C Lightning
--
Gaara felt the ground shaking slightly underneath his feet the wind blew in his hair as he glanced at the ground and then to castiel he then sees a simple Earth Kunai heading straight for him
"Lets see i can counter this quite easily with a jutsu"
Gaara then continues to focus his chakra towards his chest which is where the Kunai is heading for.
(Suiton: Mizu Kawarimi) - Water Style: Water Replacement
Rank: C
Type: Supplementary
Range: Short
Chakra cost: 15
Damage Points: N/A
Description: The user can freely transform his body into liquid. This form allows him to avoid taking direct damage from many physical attacks but can not attack while in this form.
The Earth Kunais slips straight through Gaara with him taking no damage at all as his chest begins to return to normal he looks at Castiel
"I dont think something that small is going to hurt me"
Gaara smirks and changes his stance
"My turn now"
Gaara starts to draw his Suiton chakra towards his mouth and condensing it down to a small but thick mist having the nearby water source helps this mist expand and grow faster and faster every second
(Kirigakure No Jutsu) - Hidding in Mist Jutsu
Rank: D
Type: Supplementary
Range: Short-Long
Chakra Cost: 10
Damage Points: N/A
Description: This displacement technique creates a thick mist to spring forth by lifting up some water from either a pre-existing source or expelled from their mouth, then goes in and out of sight at will from within the pearly-white realm. The mist's thickness is controlled by the amount of chakra kneaded into it. It can't fool the Byakugan, but, due to the mist being created with the user's chakra, any Sharingan and Rinnegan-user will see the mist coloured by their opponent's chakra, which will effectively hide the user from the dojutsu.
Note: Can be created through releasing from mouth or manipulating a nearby water source.
I don't know why you used water replacement to dodge that, could have used a D-rank lighting technique to destroy it. xD But, anyway. Not bad, nice twist with the mist.
--
Noticing Gaara turning into water to counter the kunai, Castiel was a little shocked that Gaara could have used that, but no matter; Castiel then notices a mist like thingo forming around Castiel and Gaara, leaving Castiel unsure of Gaara's position. So Castiel knew he had to get rid of that mist, he performs Tiger β Ox β Dog β Rabbit β Snake handseals, and releases from his body a sudden gust of wind, that blows away the mist showing Gaara's location. Once the mist is gone, Castiel stops the wind technique from going any further
"Not to shabby, now try and dodge this."
Now with the small opening, Castiel gathers up a small amount of fire chakra in his mouth, then by using shape manipulation on the chakra, and by blowing out; he releases a fireball, a small and simple one, that heads towards Gaara.
"If you haven't noticed by now, I am only testing you. You are more then welcome to try and go for the kill, I do not mind."
(FΕ«ton: Daitoppa) - Wind Release: Great Break Through
Rank: C
Type:Attack
Range:Short-Long
Chakra Cost:15
Damage Points:30
Description: This is a relatively simple technique that when the user performs the following hand seals Tiger β Ox β Dog β Rabbit β Snake they create a sudden gust of wind, but its scale varies greatly depending on the user. If used by a superior shinobi, it has enough destructive power to knock down a large tree. The wind from the squall can blow away all things in the user's line of sight. A variation of the technique involves a smaller blast of wind which gets ignited with flame.
(Katon: Komakai Kaki) - Fire Release: Small Fire
Rank: D
Type: Offense
Range: Short-Mid
Chakra Cost: 10
Damage Points: 20
Description: The user spews a small fireball.