c19 basics

Back in the real world, they had been taught the basics of extending their magical powers, with each of them expected to learn a few basic skills, if they did not already have them: low‐level self‐propulsion, a magically charged melee attack. Then, for those with particular affinities, further extensions: minor clairvoyance to enhance dodging, the beginnings of telekinesis, projecting waves of force from melee weapons, modifying your projectiles to home in on targets, basic enchantment, and so forth.

They were also instructed briefly on experimentation; Ryouko, in particular, spent time trying to understand why her soul gem had glowed near the starship core. She got Asami to try her best to replicate the relevant gravitational conditions and, while they managed to induce a faint glow, it brought her little closer to the answer.

Finally, they were taught to use their magic to overcome minor physical limitations such as, for instance, mental exhaustion. They were forced to stay underwater, and use their magic to extract oxygen from the water. They were placed in vacuum chambers, and carefully tutored in preventing the formation of inconvenient internal gas bubbles, on repairing anoxic damage, and on protecting soft tissues; ideally, they would conjure the necessary oxygen, but that training would be saved for those joining the MC.

(To The Stars, Chapter 19)