The Intra-World Rift is an inter-dimensional realm created by Necro that allows people to travel to different dimensions quickly. It is a nexus of different portals to dimensions.
It's an inter-dimensional portal place that contains an innumerable amount of portals to different dimensions.
Due to the fact that terrorists can use this to go to other places and spread chaos, another function of this is also to add extreme inter-dimensional immigration security so that the portals are kept away from the grasping hands of the Illuminati. In fact, the Intra-World Rift is so vast that it is swarming with heavily-armed SUPER SOLDIERS of all kinds, including a few TOTVMOSASAURIDAE.
When Necro is in the Intra-World Rift, he becomes the most powerful Super Metahuman.