How do the omens work?
ah, they;re just there to add some narrative flavor to your adventure. I like having Omens, when I roll for encounters, instead of just "nothing happens" - it helps bring the world to life for me.
Also, use the omens to drive narrative...if its a voice, perhaps you hear NPC shouting... or a god talking to your PC...if weather changes, perhaps a wizard is at work
I wrote this to be pretty flexible and vanilla fantasy, so freely and widely interpret
Most importantly, have fun and run with it :)