[quote=Skallagrim]
I will contain myself with the NoW setting and the places between worlds. But I am submitting a character to help get this started.
[7] - The adept at this level can essentially create a “things” out of "nothing." One of the most commonly created objects are the dreaming gates. It is via these gates that the adept can travel between worlds and dimensions. Travel between dimensions is dangerous and the traveler can easily get lost by the rapidly changing nature of the space between worlds. The dark universe is a type of “foam” that bubbles and vanishes in such rapidity that it seems as if they never had existed at all. Travel along this foam which can be viewed as a torus in space that intersects with all spaces and times in the multiverse. The dark foam folds and twists and provides "paths" which can be ridden between dimensions. An adept cannot walk between worlds until they have mastered this level of control.[/quote]

tl;dr

jk I didn't have time to read super carefully, but I do have a general idea. For creating gates, obviously that would be a plot breaking ability if it can be used to get out of this world we're stuck in, so that's disabled for those in this world. As you said it's so dangerous that it would have a 0% success rate.