Since I now have godlike powers, I’m going to use them to create a new dimension: the Grandprism, a giant cosmic prism floating in the void between worlds. While a normal prism splits white light into all the different wavelengths of visible light, the Grandprism splits...pretty much anything that falls into it (except me so I can safely tinker inside it) into its most fundamental components—such as turning light into raw energy in countless different wavelengths and turning matter into quarks and other fundamental particles. These fundamental components can then be clumped together (either manually by me or naturally by gravity and other forces) into entirely new forms of matter and energy, letting me create practically anything I want without having to actually summon anything! The only downside is that I need matter and/or energy as fuel to create things via the Grandprism. But hopefully, I’ll be able to find a consistent source of material somewhere in the multiverse...