Growth.

Goku Black had been wandering the Hub World for a few weeks now.

All the while, he had wondered how to grow his strength. To surpass even Goku and Vegeta without the help of the Crimson Mask.

Then he remembered.

Something back from the Future Timeline, when the Zero Mortals Plan was still a work in progress.

Zenkai boosts.

He would get his ass beat by the Saiyans, only for Future Zamasu to heal him, the near-death experience making his power skyrocket.

So he got started.

He built an arena similar to the Cell Games Arena, and stood in the middle of it, having de-fused so Future Zamasu could be on standby to heal him if need be.

Not wanting to waste time, he casted a message to all residents of the Hub World that he was allowing any and all persons to engage in an all-out spar with him to help him grow.

He would be starting off in Super Saiyan 2, and moving into Super Saiyan Rosé if the opponent pushes him far enough.

\[Objective: Fight Goku Black until you can no longer.\]

\[Rules: No killing. No going after Future Zamasu, as you will be promptly beaten to death if you do. If Goku Black manages to overwhelm you and knock you out of the Arena, he wins. If you knock him out of the Arena, you win, and will be rewarded with 20,000 Zeni. Damage he takes from other threads will not carry over to your thread, but Zenkai Boosts will.\]

((Please note I might not respond immediately because I'm playing Minecraft on my Xbox.))