Inertia Release: Negative Inertia Bomb

Using his advanced knowledge of his clan's Bloodline, he has learned to absorb the inertia around him and condense it into a basket-ball sized bomb. This bomb, when thrown, causes an instant blast of energy, throwing everything around it back. This is because it causes negative inertia, or negative mass. This makes the opponent(s) fly back, due to the loss of inertia.

Drawbacks
Although this is incredibly powerful, it can only be used once a week, because it uses a tremendous amount of chakra to compact the inertia of the area.