I just imagined a an item, which acted in a similar way to hyena butter or catnip, but for omens.
The item would increase the likelihood of encountering omens in explore by a small (or large) percentage. The item would be called the “Dark Talisman.” It increases the number of omens encountered in explore substantially for 30 minutes.
Chances are it would be found in the Prophet Shop, as you cannot buy things from the harbinger shop until you’ve completed all of the novel’s quests. However it could be sold in the Harbinger Shop, it all depends on what the people behind the events think. Such an item would definitely come in handy when it comes to the post-novel quests which require you to find a specific amount of omens.