Spirit Magic

Spirit Magic (精霊魔法) is a rare form of magic that summons a creature to increase the power of elemental magic.

Description
This rare form of magic summons a creature or familiar to increase the power of elemental magic. In order to use it to its full potential, specific spells are required, which are stored within grimoires.

It is unknown if all magic types have a spirit or if more than one spirit per element exists. Spirits develop over time with their users, but it is not known to what extent spirits can evolve.