I wanna say thanks for @PvB for helping me with the mechanic. And thanks to @Block builder because i use idea of The Mole level.
Wow! Amazing final surprise. It is a nice logic level perhaps little bit complex because red herring area but very cool... it remembered me the great serie Hole in Wall by @Liam. Thanks!
Hm, after reading the other comments, I must conclude that my solution is not the designed solution. I did not even use the ball.
@Ítalo Spoiler: Without ball It is not too difficult to shove R into the hole from which the magician subsequently ascends. After a few seconds, R ascended on top of the magician. R stepped off and the magician floated to the win. This solution looked so logical that I initially thought it was the designed solution, until I saw the other comments.