How would a thief of time work And what would their powers be?

Stealing Time, they may figuratively borrow other’s time, as in, use them to get what they need even if they have to distract others from their own tasks. Literally though, Stealing Time could be an interesting power. They may take things from offshot timelines to further their Timeline, and they may be able to make Time Skip to-

Wait.

Stealing Time, making the Timeline Skip-

OH.

And yes, that’s a motherfucking Jojo Reference.