by the way if he can learn how to go mirror world the he can train there with worry or before he learn how to go mirror world he can ask Ancient one to go there and hey .......... are not you want training list of Asgard may be Ancient one have it....... I mean ........ earth is under protection of Asgard and ancient one is protector of whole fucking dimension basically and there base is on earth so there should be relation/exchange between them
H'El is form krypton can use Teleportation, Size Alteration, Telekinesis, Force Field Projection, Telepathy, Astral Projection, Chronokinesis ( gain by bathed in the Star Chamber's residual energy), able to manipulate graviton particles to defy the forces of gravity. so may be you can give mc to this type of power because due to Perk "TRUE KRYPTONIAN" , this skill unlock any potential the every kryptonian have. And MC gain kryptonion power through 11th dimensional being so may be you can give him ability like retaining his abilities under the radiation of Krypton's red sun. This may also be attributed to the different types of radiation from countless stars MC's cells absorbed from all type of sun, star.