Advantages
1.) No hand seals
2.) Makes it harder for my opponent to move with finesse while on trees
3.) Can temporarily blind my opponent
Disadvantages
1.) Only short range
2.) I could accidentally blind myself if I don't get out of the immediate area when doing this
3.) The sand would also make it harder on me to move on trees
Counter
As the dust and sand begins to rise, I would use this technique:
This would make to where not only could I escape the affected area, but since sand and dust are earth materials, I would also be protected from that as well. This is due to this technique's ability to blend with Earth, obviously.
Combinations
Considering that this technique plays on my opponents seeing capabilities, I would follow suit with a technique that also plays on that. For example, first I could use this technique to blind my opponent, then follow suit with this jutsu:
Because they were blinded, they wouldn't be able to see that I didn't cause the fireball to appear. This means that they would have no reason to believe that they were under genjutsu, basically forcing them to counter a move that isn't there. This would make it to where my next turn, I would get a free shot at them, which as I am sure you know, is enough to be fatal.
Questions
While reading through this I found myself wondering if the sand could act as a veil, so that it blocks my opponents sight of me even if I am unsuccessful in blinding them?
Performance
Standing short range from your clone, Trunks kneads his fuuton chakra. Gathering it in his lungs and using change of nature transformations, Trunks is able to create a gust of wind that he releases through his mouth. As the gust travels, it collects sand and dust and blast it into your clones eyes once it reaches him. After he is blinded Trunks charges at him with his Chidori fully charged, and lunges in an attempt to impale the clone.