The seventy-two changes are not the most powerful magic
Many people believe that the most powerful thing about the Monkey King is the seventy-two changes. If he uses magic to confuse his opponents, the final winner must be him. Unexpectedly, he also has a hidden skill. However, the Jade Emperor banned it.
Monkey King's seventy-two changes are magic taught by Master Bodhi. When Wukong studied in the Bodhi Cave, the master tailor-made seventy-two changes for him. The purpose is to avoid the interests of the three disasters.
Wukong's seventy-two changes are powerful, but this magic is not his exclusive skill. Erlang God and Ox Demon King are also proficient in seventy-two transformations.
Almost all three realms know about the seventy-two changes of Erlang God. Neither could defeat the other when Wukong and Erlang God fought in Huaguo Mountain. Finally, the inseparable situation was broken by Lord Lao Zi.
Therefore, seventy-two changes are not the most powerful magic.
The most powerful magic is called Heaven and Earth.
When Sun Wukong fought with Erlang God in Huaguo Mountain, they used seventy-two changes and Heaven and Earth. Lots of immortals standing in mid-air watching the war were stunned together. What kind of thing? Wukong and Erlang God suddenly stood tall. And the whole earth was shaking. It's a war between two giants.
The most apparent phenomena of Heaven and Earth are the sky on the top of the head and the earth below the foot. The matching figure is Pangu. Wukong and Erlang God know this magic, which will inevitably hurt the innocent. To ensure the peace of the three realms, the Jade Emperor can only order it as a forbidden skill. Otherwise, someone will be trampled into meat cakes by them sooner or later.