Volatile Armor

Volatile Armor is a Dragonknight Class Ability, found in the Draconic Power Skill Line.

Volatile Armor
2700 Instant Cast Target: Self Base Skill: Spiked Armor
Release your inner dragon to gain Major Resolve, increasing your Physical and Spell Resistance by 5948 for 20 seconds. You release a spray of spikes around you, causing enemies hit to take 11 Flame Damage over 20 seconds. While active, the armor returns 1 Flame Damage to any enemy that uses a direct damage attack against you in melee range. This ability scales off your Physical and Spell Resistance.

Volatile Armor is a morph of the Spiked Armor base skill. The other morph is Hardened Armor.