Lost magic: Beast summoning

The Toads in the high mountains who valued knowledge, the Bulls in the great valleys who centered in strength and honor, the Snakes in their dark den who majored in deceit and ****, the Wolves in the great forests who believed in family and cooperation, and lastly the Ravens known for their secrecy and espionage.

When accepted by one of these five families, the user was trained in their fighting style and taught their form of magic. Once reaching a particular state users were able to summon such giant beasts in multiple manners. Finally, completely mastering the art and acquiring a relationship with a specific beast, the user was able to soul bond. This spell temporarily bonds both the castor and summons mind, body, soul, and magic creating an entirely knew being altogether. Depending on which family, the user would also gain affinities. Such as increased jumping height from the toads, or strength from the Bulls.

To learn just one of these forms of beast summoning it would take users their entire life, most if not all never reached mastery. You were the only member of your village to master the style given by each family, Taking ten years to do so.