Four Divine Spirits

The Four Divine Spirit (四神霊, Shishinrei). also known as the Four Symbols (四象), Four Sacred Beasts (四聖獣), Four Spirits (四霊) are the guardians the Stellar Spirit of the Celestial Spirit World ranked directly under the. As the life forces of the world they connect the Celestial Spirit World with the Earth plane. Legend says that when all four Spirit God Slayers are in the same place they are able to call Celestial Spirit King.

Rules
The rules for the Four Divine Spirit are somewhat different then lesser Celestial Spirits as it is more of a pact. When someone defeats an elemental they may request of them some favor as a token of parole. This is usually in the form of a pact. A pact is a link between the Spirit and the Mage. The mage receives a pattern will ebb and flow at times to reveal different things, sometimes even answer questions and reveal some secret foreknowledge. The pact is acknowledges the mage as a kin to the Spirit and its form is up to the Spirits discretion it could be a Key, a Magical Weapon, or even an ancient ruin used by the spirits called Enochian grafted in a mobile form on a limb.

There are Magic Items associated with Four Divine Spirit, however they aren’t Keys but Magatama (勾玉, less frequently 曲玉) curved, comma-shaped gems, and they don’t summon the Spirits, but are imbued with their powers. Magatama grants some limited power and control to the mage, how much depends on how long and hard they study to master the item. Unfortunately use of Magatama is extremely dangerous since in order to obtain the powers they grant, the mage will need to make sacrifices in which they will have to continuously provide their life force to the Spirit it represents.

Leader
Hōsenka (鳳仙花, Phoenix Sage Flower): Hosenka is the Spirit Queen of Fire’s equivalent to a Celestial Gem.

Members
Genbu Scale Gauntlet (玄武鱗篭手 Genbu Uroko Kote): A Magatama that contains the power of Genbu

Byakko’s Long Sword (白虎太刀 Byakko Tachi): A Magatama that contains the power of Byakko.

Seiryu’s Feather Dress (聖龍の羽飾りSei ryū no hane-kazari): A Magatama that contains the power of Seiryu.

Trivia
These Celestial Spirits are based off of the four Spirit Kings from Kurohime.