Understood.
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Alright, first technique, a defensive jutsu, which i assume can be put infront of the user by focusing chakra in his hands and lifting them infront of him.
It doesn't require any handseals, making probably the best option to consider when the opponent is charging at the user to perform Tai or Kenjutsu. It can also block ninja weapons that are thrown at the user. It can probably also probably block the D-Rank lightning bolts thanks to the elemental advantage. As for disadvantages, if the opponent throws anything that can trigger upon impact with something, the Wall will not be the best choice for these things, as it may also injure the user. It also only a D-Rank jutsu, making the user vulnerable to almost any elemental jutsus with a rank higher than D.
Second jutsu, a Supplementary jutsu that allows the user to change direction while he is airborne, by blowing wind below them. It requires no handseals, making it a nice choice if the user needs to disengage from a fight or try escape an attacked aimed at him while he is in the air.
Disadvantages, as the user is blowing wind out of his mouth, i don't think he will be able to perform any other jutsus before reaching the ground, making him vulnerable to surprise attacks from the ground while he is trying to avoid an attack coming from the air.
Third jutsu, this jutsu can also be performed without handseals by blowing wind from his mouth, causing a stream of wind to form, that is strong enough to carry the opponent in the air, while also carrying different objects around the opponent, and making them hit the opponent. This is useful as it might surprise the enemy, and doesn't allow him to perform any Doton jutsus, because it lifts him off the ground, or it can be used to interrupt an opponent while weaving signs. (not sure about this)
Disadvantages, the opponent has the option to perform Wind Release: Wind Stream Technique allowing him to escape easily. Also I believe the opponent can protect him from being lifted into the air, by forming an earth wall infront of himself.