bouncing blood

you trow a beam of blood at target dealing 1d8 damege . if spell hits the target , you can chose bounce the spell in 50 ft agein . after the second bounce , every bounce adds a -1 to hit.

if you chose not to bounce the spell then it will deal 2d8 damege   . If you cast this spell at higher level then every bounce before you chose to stop the beam will add 1d4+1 damege to damege when you chose to not bounce it