This will merge your body with 4 of your spirits. IE: You will no longer be seperate or require bonding or anything you will become one. You will stay that way in every lifetime after this so make sure you know what you are doing. You can merge with any spirits you wish but you will feel their power and their tempers and they will feel yours. This is unlike anything you have experienced before and can be dangerous depending on whom you choose to merge with.
gerund or present participle: merging
combine or cause to combine to form a single entity.
"the utility companies are cutting costs and merging with other companies"
synonyms: join (together), join forces, amalgamate, unite, affiliate, team up, link (up) More
blend or cause to blend gradually into something else so as to become indistinguishable from it.
"he crouched low and endeavored to merge into the darkness of the forest"
synonyms: mingle, blend, fuse, mix, intermix, intermingle, coalesce; literarycommingle
"the two colors merged"