The Cube Spell

Yes...this darned spell does really exist. You've heard of it, you've dreamed of it, you've pictured how it would work and whether it was real. Now I, the Pen Master, am telling you that it does exist. Now hold your horses and put down your pitchforks, it has never been shown in the main timeline, where Jimmy as we know it exists. However, in an ancient, distant reality, long since forgotten (because ahem...it's a cube now), the spell did exist and was used. Let me explain what it was and what happened...

Woah, you're still here
So in this...let's say poorly thought out and Mary Sue reality, a certain alternate Jimmy the Wizard was relishing in his omnipotent glory. I mean, there was no story in this reality. Jimmy crushed anyone who dared to think against him with generic and fantastic overpowered spells of genericness! Anyway, one day, a powerful threat did arise, a threat which shall uh...remain unnamed (I forgot). This generic threat, which actually I shall name. We'll name it Jonny. So Jonny arose from the flames of something, with some generic purpose, but for some forgotten reason Jimmy's usual OP spells didn't work! (this is where you gasp in astonishment). Long story short Jimmy was forced to whip out the spell that this article was written about. Anyway, not knowing what the spell's full consequences would be, Jimmy cast it cause eh, why not? Anyway everything in that reality, and the reality itself, was compressed into a small cube about 10 cm^2, which somehow ended up playing a big part in the first Avengers movie.

So, why doesn't it exist in the current timeline?
Cause it's stupid that's why, and I can do what I want. Now get off my lawn.