Rock Armor

Spell Type: Defense; Mana Cost: 3-8 MP; TN: 10
Test: None; Requirements: None

Your skin becomes as hard as stone and protects you from harm. Rock armor has an Armor Rating equal to your Magic skill. The spell lasts for 1 hour but its duration can be extended by spending additional mana points. For each additional MP spent beyond the first 3, rock armor remains in effect for another hour, to a maximum of 6 hours total. A mage wearing regular armor gains no benefit from this spell. You can only cast this on yourself.