According to Osho, when you can make things materialize, you also see the absurdity of doing so; the higher power is to refrain. Deliberate miracles only feed a lower, materialistic mind, keeping people fixated on bread, disease, and death. The real miracle is awakening—turning suffering into insight, witnessing hunger, and initiating seekers into the deathless. Thus mastery is not producing phenomena, but using life to free people from attachment.
If you can do miracles, the wiser choice is to not show tricks but help people wake up inside.