Here I also have to tell you gravitation is not something magic can control as gravitation is one of the fundamentals of the 3-dimensional space. Why? Because even if light for example, which is without mass and can't be directly influenced by gravity. Gravity influences the spacetime curvature which then influences the momentum energy of light (General Relativity). Simplified: gravity can't directly influence energy waves but thanks to its connection with space it still can do it indirectly. gravitation can be controlled while going around the corner. It is possible by using our knowledge that if you spin a certain mass fast enough its gravitational pull will be amplified. If you use now some small ball somehow put up in the air. You could spin it so fast that it nullifies the earth own natural gravity. What for possible side effects this could have I don't even want to think about.
