A person attuned to this level is called a 'Master Healer'. This level is atleast 10 times more powerful than the second level. At this level, a healer is capable of sending Reiki by thought alone. During the cleansing process after this attunement, the channel might experience a variety of things. Since this degree causes spiritual healing, it causes some people to have strange dreams, remember past life experiences, or resolve long-standing fears. The attunement to this level takes about a day.
With regular practice, the healer will find that just thinking about something will cause that person/ event to receive Reiki energy. Positive thinking becomes essential at this level, as any negative thought might just come true.