*I jump into the air as I focus chakra in my lungs and inhale. Once I reach the peak of my jump, I exhale and shape manipulation as i blow out three large balls/bullets of fire at the ground. Keeping a little chakra in them, when they hit the ground, I use the chakra to erupt the flames and causing geysers.*
One strength is that it reachs long range as most fire techniques before do not. Also, they erupt upon impact to it gives like extra hits. Some weaknesses are that I have to jump in the air to use it. I can get shot down right after jumping. And after the move is used, I have a couple seconds to reach the ground. Also, the three bullets combined are B rank. Not each one.
I would most likely use this move when I'm already in the air or jumping off of something and using it on my way down. Like a summoning. Countering it would include large scale water techniques or something like water bullet or destruction torrent. There's also earth jutsu that can create a wall to protect and wind jutsu powerful enough to disperse it.