Sickle of Sorrow

"Now I've figured it out. The reason for the runaway growth in your power level compared to my own. It's anger, isn't it? Watching us hurt your son made you angry which made you stronger. So that's how Saiyans' strength works. How primal. Turning your fleeting raw emotions into power! Only a pathetic mortal like yourself could thrive on a tactic that unrefined, which explains why it took so long to realize it. But if that's what fuels this body, I shall use my anger! Anger toward the mortals who defile the universe. Anger toward the other gods who have tolerated such behavior. And most importantly, the white hot rage I now feel toward myself for letting you get the upper hand on me in our battle."

- Goku Black to Vegeta while developing the technique

Overview
The Sickle of Sorrow is a whitish-magenta energy scythe, shrouded in Black's own aura and furthermore augmented in power. Black is only ever seen wielding it in his right hand. Goku Black states that his "the rage of the god" is what gave the Sickle of Sorrow form and continues to fuel its strength. Though its large size makes its attacks relatively slow, the giant slashes it launches are capable of tearing through spacetime itself and creating dimensional rifts. While wielding the Sickle of Sorrow, Black proclaims that his anger makes him the "strongest".