Here is the issue with your understanding of "supernatural" as related to the Communion.
You have not been taught by God or by the New Testament that a "Priest' has the "magic power" to turn the cookie and the juice into God Himself., as Christ is God.
See the issue?
God has not stated in His word that a Catholic Priest has been given a 'supernatural" magic power to channel God Himself, into a cookie and some juice.
You have been taught to believe this by people who invented this idea, themselves.
Also, its not the cookie and the juice that is the "mystical" part of the communion, its the taking of it, or rather the partaking of it..
Real believers are remembering the Holy One as their sacrifice, when they partake, while a Catholic thinks the mystical aspect of communion is a cookie made in China, and some juice or wine that is made, wherever.
Taking communion is a good thing.
Misrepresenting it as the CC does, is not a good thing.