Zoostuck 3

do you mind if we give you a name in case you're not a wizard or a spinjutsu master in the next universe, just in case things go south?

You have your memories of being an evil wizard and you know exactly how much power there is in a name, so you're not giving yours away freely. Especially not to extradimensional entities attempting to drive the story.

just tell mr. prez that the canal is dug already. Then, he'll get here and realize it's not and you'll be the one laughing.

As amusing as that would be, it would do nothing to prevent Roosevelt from digging the canal. That wouldn't serve your arbitrary short-term objectives at all. No, you need something that will actively interfere with his plans.

dig it upside-down

Perfect. Since your spinjitsu is evil, clearly that makes it a form of reverse spinjitsu that you can use to dig a canal upside-down, especially with the mastery of it that you have from your previous life.

Except no, that isn't how it works at all, you'd need some sort of anti-spinjitsu to do that and such a thing couldn't possibly POW!

You are now Jogh Edgebert.

You aren't really sure how it worked, but somehow you perfected your anti-spinjitsu and were able to use it to propel yourself backwards through time, returning to the world of the living. In the process, you made a surprise attack on the guy who killed you in the first place.

He's not quite dead. However, the force of your anti-spinjitsu strike knocked out not only him, but also all these other spinjitsu users in the area. In addition, it sent a shockwave through the ground that was strong enough to dig an upside-down canal. The water of the canal is just floating in midair inexplicably, leaving a tunnel that appears to extend into an infinite downward sky beneath it.

It is now more than a century before any of the nefarious plans that involve manipulating you or manipulating the various people manipulating you can come to fruition. This is the perfect chance to solidify your grasp on the universe you created.

How are you going to do that?