Shamanism and Reiki are powerful healing forces available to the Shaman/Reiki practitioner. When combined, their power multiplies, and healing methods become available that aren’t accessible when used separately.
Cave paintings in Europe dating from the Palaeolithic era show Shamans along with the natural world in which they practised as healers, and protectors of the tribes they belonged to. In 2006, in Northern Israel, the grave of a Shaman was discovered. She lived in the late Natufian era (10,800-9,500 BCE).
Shamans are practiced in and have extensive connection with the natural world for the shaman, man, animals, plants, rocks, wind, rain, sun, stars, and moon are alive with Spirits.
Shamans were traditional tribal healers, Anthropologists coined the term and use it to refer to the spiritual and ceremonial leaders among indigenous cultures worldwide. Shamanism,  is used to describe ancient spiritual practices in indigenous cultures, it is a spiritual and psycho-therapeutic healing technique. It is a world-wide religious phenomenon, considered by many anthropologists to be the most ancient and fundamental form of spiritual practice in human life. Although Shamanism is not present today in all societies, it can be found in many at all levels of complexity and sophistication across the world. 
The definition of Shaman in the Urban Dictionary is:
… One who can interact and mediate with the spirit world on behalf of their community, usually by ecstatic trance techniques (That is their spirit/soul leaves their physical body in order to travel to a world of pure spirit rather than physical matter) for the purposes of divination, foretelling the future, information gathering, healing and to receive wisdom.
The Shamans World view is of realms or domains That correspond with:
The Lower Realm:
The Lower realm is creation, traditionally called, the Underworld. It plays a big role in the ancient Egyptian and Greek mythologies. Later, with the development centralised religions such as Christianity, it was transformed into Hell and a place of punishment, pain and burning. Shaman s visiting the lower Realm may experience variations of level of depth according to their helping spirits and guides.
The Middle or Physical Realm
The Middle World is the world in which we live. It is what we sense with our senses. The Middle Realm is the realm of the physical and a realm in which each night we go to sleep and dream so it is sometimes referred to the dream world. It is a world of emotions and desires, like water which represents the middle realm, there is a continuous flow of energy from birth to death. Because the realm is represented by water, which is formless without a container, the Middle Realm is also a container.
The Middle Realm container, also holds subtle unseen earthly powers and magical forces. All growing things, rivers, trees, insects, animals, and solid things such as mountains and rocks all have spirits. Gravity and electrical energy are spirits, as is the air we breathe which like water is formless also.
In the Upper Realm
This is the real of the dead or ancestors. It is also the realm of angels, gods and spiritual teachers. As with the Lower Realm, Shaman may experience many subtle levels in this realm.
Many cultures count more than one level at this world, as many as ninety-nine.
The Upper World is symbolized by the Air element. This realm represents thoughts, ideas, light and inspiration. In the Greek Mythology the Upper World is ruled by Zeus, the king of the Gods. Shamans journey to this world to obtain knowledge from ancestors’ spirits and the dead.
The Buddhist texts Dr. Mikao Usui studied in Tibet were based on recording Shamanic and Bon religious knowledge and practices. The Reiki symbols do not exist in Shamanism or Bon. They are primarily Buddhist in nature.
To add Shamanic energy to your Reiki sessions you first need some practice. Practice in experiencing the ecstatic trance states and states of altered consciousness, Shamans journey across the three realms connecting with the spirit of living and inanimate things to bring knowledge and healing energy to benefit the sick or protect and clear darker energies from a place or person.
Draw the curtains of your bedroom and ay down on the bed. Place your hands over your heart and concentrate on your beating heart. It has a rhythm and will slow down and become less active as your become at peace with your world, this world, the middle realm.
Be clear in your mind about the goals and intentions of your practice. Be clear in your mind as to what your intention is, say it in your mind or even out loud. Say it to your helping spirits. Helping spirts may take many forms, do not judge them, not criticize them. Most of all do not judge the power they have.
Allow the time to benefit you so that when you journey for a person who needs healing, you will be able to help them more effectively. This is a time of growing and progress for yourself. Allow yourself to grow, grow in all directions. When you converse with your helping spirits and any ancestor spirits you encounter, ask how you can develop your relationship with them and the use the information to do so.
Later, the answer to your question will be directed and used in healing. As you become at peace, clear your energetic mind of the ego wishes and busy frantic mind. What do you experience when your mind is clear of all these distractions?
If you meet spirits and souls, animals, trees and rocks ask if they have a message or information for you. Whether they do or not be thankful for them and of them.
As you become more experienced, you will be able to direct your shamanic journeying and you will interact with your helping spirits who are there to work you and for you. Journeying part of meditation and can be incorporated in to meditation sessions.
A shaman incorporates, drumming, rattles, and an elaborate costume into their practice and ceremonies. Costumes are not essential for adding Shamanic Energy to a Reiki session.
Journeying to the Upper and Lower Realms and connecting with teachers, helping spirits and our guides helps us understand ourselves, our past lives and the events in them. We have had mistaken, injuries, injustices some of which have created blockages to our current physical existence. Use the information you gather on your journey to release them. Write them down and formally release them.
Soul Retrieval is important to a Shaman. Trauma or pain, an accident, or loss of a loved one, or something that it is beneficial to us, such as surgery, can cause a part of our soul to become detached out of fright and fear. The Shaman must journey, find and retrieve and reintegrate what has been found with the persons soul.
If the person is aware something will happen in the future, such as surgery, the shaman may help the soul adjust to what will happen before it takes place. In this way the soul is not shocked and split as a result.
https://www.timesofisrael.com/12000-year-old-grave-of-shaman-woman-unearthed-in-galilee/ “12,000-year-old grave of Shaman woman unearthed in Galilee The Times of Israel.”
Rozwadowski, A. and M. M. Kośko (2002). Spirits and stones : shamanism and rock art in Central Asia and Siberia. Poznań, Instytut Wschodni UAM.
 Rozwadowski, A. and M. M. Kośko (2002). Spirits and stones : shamanism and rock art in Central Asia and Siberia. Poznań, Instytut Wschodni UAM.
 https://www.timesofisrael.com/12000-year-old-grave-of-shaman-woman-unearthed-in-galilee/ “12,000-year-old grave of Shaman woman unearthed in Galilee The Times of Israel.”
 “Tibet,” Wikipedia, September 10, 2018, https://en.wikipedia.org/w/index.php?title=Tibet&oldid=858880580.
 “Ancient Tibetan Bonpo Shamanism,” accessed September 11, 2018, http://www.vajranatha.com/articles/traditions/bonpo.html?showall=1.
 “Korean Shamanism,” Korean Shamanism, accessed September 12, 2018, http://shamanism.sgarrigues.net/.
 “Urban Dictionary: Shaman,” Urban Dictionary, accessed September 12, 2018, https://www.urbandictionary.com/define.php?term=shaman.
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