Oregano is bound to Venus and air.  It is an herb of happiness, tranquility, good luck, health, and protection. Make a Tea or burn as an incense for any of the above, and for letting go of someone you love - be it a husband, wife, girlfriend, boyfriend, or anyone else that it hurts to leave. 

Plant Oregano around your house for protection, and scatter it inside the house to protect it (add violets to protect the family from colds).  Carry it in a sachet or charm to bring good luck and good health.  It is also said to protect and promote psychic dreams when worn on the head during sleep.