Dear Nicky, the conduit to the Infinity Brain you have access to is unstable, and will likely damage your body if used for even a moment. Extensive use will likely multiply the damage, and eventually it could destroy you totally. (Your body is just too mundane. I keep telling you to let me upgrade it.)

That being said, feel free to use it whenever! I doubt you will be able to create with it, but purely as a destructive output it should be pretty impressive!

-A handwritten note from the Cynthia the Snow Queen, to her Sister the witch Nicky, carefully folded and put away in a drawer, with all other notes from Cynthia