Kate + Fenris [ TW ]
No, it is a powerful magical mineral. It can be processed into a liquid, or in the case of what lies under my skin, a flexible solid. It is used primarily as a source of magical power. My lyrium enables me to turn part or all of my body immaterial at will, send out a blast of power against an enemy, or to boost a mage's power for a spell. They also make me more resistant to magical attack, but more sensitive to physical attack or any touch.