Mineral warrior

A mineral warrior, or stony as they were called too, were a type of creature that had elemental earth as part of their being.

Description
A mineral warrior was not born naturally. A mineral warrior was a creature that was not a construct, elemental, or undead that subjected itself to transformation magic to a mineral warrior.

They looked like petrified versions of themselves, but this had no effect on their agility.

Personality
As a general rule, a mineral warrior willingly became one. That said, some became mineral warriors, because they were forced into the transformation by a member of an evil race from the Underdark.

Combat
Becoming a mineral warrior meant a lot of benefits for the one who became one. They could burrow through the ground as fast as they could walk. However, they lost all ability to fly naturally.

Their skin became tougher and even when an opponent managed to effectively hit a mineral warrior, if the weapon was not made of adamantine, it was hard to hurt the mineral warrior with it.

A mineral warrior gained darkvision.

A mineral warrior gained enhanced physical strength and durability, but all the mineral warrior's mental capacity dropped, it was possible for the creature to drop to animal intelligence.

The most devastating attack of a mineral warrior was called earth attack. This attack was only usable against creature who stood on stone or earth. It was a vicious attack that became more accurate as the durability of the mineral warrior increased.

History
By the 14 century DR, the spell mineralize warrior was developed that changed a willing humanoid into a mineral warrior.