Your disadvantages aren't really disadvantages. ._. It's just basic knowledge that's common for the Raiton element.
But, this technique doesn't have any really obvious disadvantages - it's a very good technique, other than the string of handseals needed.
It's essentially a lightning variant of Hurricane Fist or Destruction Torrent, other than the fact it requires handseals; and thus, is good when used in conjunction with them, as it moves very quickly, as shown, and has ample strength.
Alright, now, preform the technique, using detail in describing the steps of actually using it.
How the technique is performed:By manipulating lightning chakra into their hand, the user can make the lightning expand to create the form of a hound. The hound remains connected to the user's hand, allowing them to control it during its attack.
I focus my raiton chakra and distribute it around my body i then focus it in my palms and use the lightning chakra which is focusedto make a hound of raiton which is connected to my hand allowing me to c0ntrol it.