Corrosive Armor is a skill located in the Earthen Heart (which can be found in the Dragonknight skill tree). Corrosive Armor is an ultimate. Corrosive Armor is a morph of Magma Armor
Corrosive Armor deals the following types of damage: Poison Damage. Which means that it gets buffed by the following blue champion point trees: Master at Arms, Mighty, Piercing, Precise Strikes. Also the following red champion point trees protect against this skill: Hardy, Iron Clad.