Rune of earth

Rune of Earth
Skill type: Spell
Skill subtype: Utility, locks
Primary user: Earth scholar, Earth templar
Duration: Level/4 Hours
Casting cost: 50 mana
Range: Target Door
Syntax: Cast 'Rune of Earth' <direction>

Rune of earth seals off a door, making it impassable by any conventional means: the lock cannot be opened normally, nor can it be forced by mundane or magical means, and the door cannot be passed through while the spell is in effect. However, it is possible for a runed door to be forced open by a bard's song.