Calendula is the Oracle flower, the herb of vision. It opens psychic portals and elucidates dreams. It magnifies intuition into inner sight and amplifies the inner voice into a clear, forward leading guide.  It helps at all levels, from simply sharpening your intuition, to developing the inner voice, and up to gaining the power of divination.
 
For those that practice the Tarot, I-ching, reading of tea leaves, those whom read the Bible, Tao Te Ching or meditate, pray, chant for insight, having a calendula sachet will deepen insight and extend your vision, increasing detail and clarity of the outcomes. 
 
For those not on that path, Calendula can sharpen your hunches, and  help you glance more with your eyes. It will sharpen your intuition and both widen and clarify your observation when making decisions.