You can manipulate the fabric of spacetime, allowing you to make non-euclidean regions that defy conventional physics. This would allow you to make things bigger on the inside, an endlessly looping stairway, or even a time dilation room. There is a somatic component to this power, requiring that you stretch and pull at the very fabric of spacetime with your bare hands. You may not reverse time, and you cannot cross dimensions either. The better your knowledge of a region, the higher the quality of the manipulations you do, making it almost impossible to accurately portal to a place you've never been to before. Due to your manipulation's somatic nature, complex or long-range manipulations require much more time to enact, possibly increasing by several magnitudes.