Idolism

Idolism refers to when a type of magic -- then called an Idol -- links itself to a soul.

The only magic to go idolic in recorded history is Elementalism.

Idolicism
There are two ways to calculate a person's inherent idolicism: Idolic Potential and Idolic Bond.

Idolic Potential is how likely a person would be able to utilize an idol, and is determined by birth (see Inheritence).

Idolic Bond is how tightly bound an Idol is to a person's soul, and is determined by how often a person calls upon an Idol.

Though many people can have Idolic Potential, only those who presently possess (or have previously possessed) an Idol can have Idolic Bond.

Inheritance
When an Idol is unbound from a soul, it will find its way to the nearest person with the highest Idolic Potential to rebind to. Quite often, this occurs upon an Idol Bearer’s death.

In an effort of continuance, if an Idol is not fully bound to the bearer’s soul, it is passed along upon childbirth. There are some exceptions; if the Idol is used with such frequency that a bond is likely, there is a chance it will cling to its initial host.

In cases where both parents bear unbound idols, the mother’s is typically passed down first. Should the idolic father perish before producing another heir, it will go to the nearest person with the highest Idolic Potential.

Twins hold an uncertainty. Should both parents possess an idol, both will be passed down upon childbirth, one to each child. Should only one idol be available, it’s uncertain whether the Idol favours conception, birth order, or soul compatibility.