The effect of the growth of the skill was immediate, with the mind less overloaded, he could maintain the two magics, and take care of other things. Trying to get there with his air reserve or trying to speed up more was not a good option, the only thing he could do was open a dimensional rift and appear at the crossroads.
Luckily, when he made the decision to stop diving and use the fastest route, all that mental pressure of seeing how the oxygen was running out disappeared. Trying to pass this test without spatial magic or without the help of psyche magic would have been absolute madness. But luckily everything was going well.
