Should superpowers announce?

like, say I've invented a magic trick that I don't know how it's done. What is my moral obligation to report novel phenomena? If a divine singularity spontaneously opens up in my living room, or in my kidney, and somehow I harness it and taught myself to fly -- do I have to tell people, or do we think it would be too scary? It seems really obscene and disruptive to announce something so premise-shattering. Shouldn't I labor in secrecy? Do I have to expose my abilities to some sort of mandate before I can start?