Mxy is realistically actually infinite dimensional, or high 1-B in VSB's system. 5-D = Imagination = Bleedspace = Infinite multiverses, layers, and dimensions. 5-D =/= 5-D in a geometric sense. It's actually really similar to how the fifth dimension in Twin Peaks is infinite infinitely-dense energy levels and thus is technically infinite-D by VSB standards but still is "five dimensional."
But nope, VSB has declared 20-D hyperversal necrons defeat 5-D complex multiversal Mxy
Man, I get that they wanted a way to analyze things that went past "multiversal" but that word salad is some cancer shit
