Phantom Slash was a powerful and tireless skill which allowed him to think of a move he would do and send a Phantom of his to perform that move before he did.
His phantom was faster in attack speed and carried 90% of his strength both Magical and Physical type.
It was a skill that let him catch his opponents off gaurd and also see if they had something hidden up their sleeves. After all, his phantom could be destroyed and he wouldn't suffer at all.
The downside of this skill was that his opponent could predict his next move since he couldn't change his attack once he used the Phantom Slash.
If his Phantom did a vertical slash then he needed to do the same. Even if he didn't want to, his body would follow up automatically.
So, he used this skill mostly on Magical Creatures or when he wanted to catch his opponent off gaurd, just like how he did with the Sand Rustle.
