Darkness Sword Attack
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
First, Dabura creates a sword using Magic Materialization and extends it while encasing it in fire. Next, he slashes his opponent multiple times and uses it to knock them away. Finally, Dabura flies toward his opponent with tremendous speed and immediately stops right in front of them (just as they are recovering from the earlier attack) and blasts them in the face with an energy beam.
Dragon Ball Z
It later appeared in Dragon Ball: Raging Blast 2 and is once again Dabura's Ultimate Blast.