From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
The Trap Shooter (トラップ シューター, Torappu Shūtā) is an energy sphere attack used by many fighters. The user draws their hand back and charges a green or yellow energy sphere. They then wave their hand forward and fire several, compact, powerful energy spheres that follow their opponent's movements, inflicting considerable damage.
Dragon Ball Z: Broly: The Legendary Super Saiyan
Dragon Ball Z: Bojack Unbound
Bojack attempted to use this attack in his fight against Piccolo in Dragon Ball Z: Bojack Unbound. Although he was seen in the position for launching it, Bojack actually never used the Trap Shooter due to Future Trunks Brief' intervention.