Crystal Type

CRYSTAL TYPE:
The Spiritia region has an abundant amount of special crystals in its crust, due to a battle that took place between Hevangela and Iblijinsin, the two legendary Pokemon of the region. Their epic duel within the earth was so strong that each clash they made had caused enough pressure to compress simple dirt into said crystals. This also had created new Pokemon made from crystal over time.

Here's how the type works:
DEFENSIVE:
Weak to: Fire, Ground,
Resistant to: Flying, Electric, Fighting, Normal, Poison
Immune to: Dragon (haha, just kidding. It's actually immune to Dark)

OFFENSIVE:
SE against: Rock, Dark, Fairy, Ground, Ice
NVE against: Fire

Fast forward a few years, and people have now figured out that these crystals invoke special reactions in Pokemon-- as evolutionary stones. Pokemon such as Eevee who evolve by stone now have crystalline forms, considered sacred and blessed by many of the elders in Spiritia.