Mirek,
"Yar-ko, "Yar-kko" or, more often, "Jar-kko"= Ancient oracle (= a person or agency considered to be a source of wise counsel or prophetic opinion; an infallible authority, usually spiritual in nature. It may also be a revealed prediction or precognition of the future, from deities, that is spoken through another object or life-form (e.g.: augury and auspice, or a forum)). The Jar-kko oracle cult has the greatest number of followers on the Greek island of Hydra, although, comparing mythologies, it originally seems to be centred around the Finish mythological figure "Ukko" (not my fault that that apparently translates as "old man"!

). The exact connections remain unknown. But we know that just as the Jar-kko oracle, Ukko "makes all his appearances in myths solely by natural effects when asked", according to Wikipedia. So, yes, let us challenge the oracle directly: What is the big announcement going to be???
"You thought that it could never happen / to all the people that you became"...
Love Calls You By Your Name